Using Plant Growth Regulators on Containerized Herbaceous Perennials

Authors: Joyce G. Latimer, Extension Specialist, Greenhouse Crops; Holly L. Scoggins, Assistant Professor of Horticulture and Thomas J. Banko, Associate Professor of Horticulture, Hampton Roads AREC; Virginia Tech

Publication Number 430-103, December 2001

Table 1. Summary of research results on the use of plant growth regulators (PGRs) on containerized, herbaceous perennials. Rates listed were tested as spray applications at label-recommended volumes unless otherwise stated. The rates listed should be used as starting points for your own PGR trials. Multiple applications are generally applied 10-14 days apart. Note: "NR" means the plants were not responsive to the rates tested.

Crop Common Name Product Spray Rate (ppm) x No. Applications* Precautions & Remarks

Achillea x 'Coronation Gold' Yarrow B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi 30 to 40 x 1

Cycocel NR @ 4000 x 1

Florel 500 x 1 Delayed flowering. Apply before visible bud.

Sumagic Less than 15 x 1 Persistent reductions in plant growth continue in the landscape.

Achillea x 'Moonshine' Yarrow B-Nine NR @ 5000 x 2

Bonzi Much less than 240 x 1 This rate caused excessive height reduction. Test rates much lower than 240 ppm.

Sumagic NR @ 60 x 1

Achillea x 'Paprika' Yarrow B-Nine multiple @ 5000 Apply at 10-14 day intervals. May delay flowering.

B-Nine/Cycocel 5000/1500 x 1

Sumagic 15 x 1 Plant width also reduced.

Achillea x 'Summer Pastels' Yarrow B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi 120 x 1 greater than 30 x 4

Cycocel NR @ 4000 x 1

Sumagic NR @ 60 x 1

Achillea millefolium 'Weser River Sandstone' Yarrow Florel 1000 x 3 Increased number of flowers; height control moderate.

Agapanthus African Lily Bonzi Greater than 30 x 1 (drench)

Agastache x 'Blue Fortune'^z Anise Hyssop B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Sumagic Less than 15 x 1 Very sensitive to Sumagic. Apply at rates much lower than 15 ppm.

Alcea rosea 'Powder Puff Mix' 'Chater's Double Mix' Hollyhock B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi 30 to 50 x 1

Bonzi 1.5 x 1 (drench)

Florel 500 x 2

Sumagic Much less than 15 x 1 Very sensitive to Sumagic. Test rates much lower than 15 ppm.

Aquilegia x hybrida 'McKana Giants' Hybrid Columbine B-Nine multiple @ 5000 Apply at 10-14 day intervals.

Bonzi NR @ 240 x 1

Sumagic NR @ 120 x 1

Asclepias tuberosa 'Royal Red' Butterfly Weed B-Nine 5000 x 3-4 Apply at 10-14 day intervals.

Bonzi 30 x 4

Aster x frikartii 'Monch' 'Monarch' 'Alpine Mix' Frikart's Aster B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi NR @ 240 x 1; NR @ 30 x 4

Bonzi 12-16 x 1 (drench)

Sumagic NR @ 60 x 1

Astilbe x arendsii 'Bressingham Beauty' Hybrid Astilbe B-Nine 5000 x 4 Apply weekly beginning just after inflorescence begins to elongate.

Bonzi Greater than 30 x 4

Bonzi 30 x 1 (drench)

Baptisia False Indigo Bonzi 30 x 1 (drench)

Barleria cristata Phillippine Violet B-Nine 5000 x 3 Apply at 10-14 day intervals.

Bonzi Greater than 45 x 1

Boltonia asteroids Bolton's Aster Bonzi >30 x 1 (drench)

Buddleia davidii 'Pink Delight' Butterfly Bush Bonzi Greater than30 x 1 (drench)

B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/1500 x 1

Sumagic NR @ 60 x 1

Buddleia davidii 'Royal Red' Butterfly Bush A-Rest Much less than 100 x 4 Excessive height reduction. Reduce rate or frequency.

B-Nine multiple @ 5000 Moderate control. Apply at 10-14 day intervals.

B-Nine/Cycocel NR @ 5000/1500 x 1

Bonzi Greater than 40 x 1

Bonzi 5 x 1 (drench)

Sumagic NR @ 60 x 1

Campanula carpatica 'Blue Chips' Carpathian Harebell B-Nine 5000 x 2 to 4 Apply at 10-14 day intervals.

Bonzi Much less than 30 x 4 Excessive height reduction. Reduce rate or frequency.

Cycocel Much less than 1500 x 4 Excessive height reduction. Reduce rate or frequency.

Sumagic Much less than 15 x 4 Excessive height reduction. Reduce rate or frequency.

Campanula persicifolia 'Blue Peachleaf Bellflower B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Canna x generalis 'Florence Vaughan' Hybrid Canna B-Nine NR @ 7500 x 1

Bonzi 66 x 1

Florel NR @ 1000 x 1

Canna x orchiodes Hybrid Canna B-Nine NR @ 7500 x 1 Delayed flowering.

Bonzi 66 to 99 x 1

Florel NR @ 1000 x 1

Centaurea montana 'Violet' Mountain Bluet B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Chelone glabra White Turtle-head B-Nine NR @ 5000 x 4

Bonzi Greater than 30 x 4

Bonzi 30 x 1 (drench)

Chrysanthemum coccineum 'James Kelway' Painted Daisy B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Bonzi Greater than 30 x 1 (drench)

Bonzi Much less than 40 x 1 Very sensitive to Bonzi. Test rates much lower than 40 ppm.

Chrysanthemum parthenium Feverfew Cycocel 750 x 1

Sumagic Much lower than 15 x 1 Very sensitive to Sumagic. Test rates much lower than 15 ppm

Coreopsis grandiflora 'Sunray' 'Baby Sun' Tickseed A-Rest NR @ 100 x 3

B-Nine 5000 x 3 May delay flowering. Apply at 10-14 day intervals.

B-Nine/Bonzi 2500/20 to 40 x 1

B-Nine/Cycocel Greater than 2500/1500 x 1

Bonzi 80 to 100 x 1

Bonzi 5 to 10 x 1 (drench)

Cycocel NR @ 1500 x 3

Sumagic 40 x 1 or 15 x 2 May delay flowering

Coreopsis rosea Pink coreopsis B-Nine 7500 x 1

Bonzi NR @ 100 x 1

Bonzi Greater than 4 x 1 (drench)

Sumagic 40 x 1

Coreopsis verticillata 'Moonbeam' Thread Leaf Coreopsis A-Rest NR @ 100 x 4

B-Nine 5000 x 2 Some flower delay. Apply at 10-14 day intervals.

Bonzi NR @ 160 x 1

Cycocel NR @ 1500 x 4

Florel NR @ 1000 x 3

Sumagic 15 x 4

Coreopsis verticillata 'Zagreb' Thread Leaf Coreopsis B-Nine 5000 x 2

B-Nine/Cycocel 5000/1500 x 1

Florel NR @ 500 x 2

Sumagic 20 x 1

Cortaderia selloana Pampas Grass A-Rest 30 x 1 (drench)

Bonzi 15 x 1 (drench)

Sumagic Much lower than 1 x 1 Very sensitive to Sumagic. Test rates below 1 ppm.

Crocosmia Montbretia B-Nine NR @ 5000 x 4

Delphinium x elatum 'Magic Fountains' Hybrid Bee Delphinium A-Rest NR @ 100 x 3

B-Nine NR @ 5000 x 3

Bonzi Less than 30 x 4

Bonzi Greater than30 x 1 (drench)

Cycocel NR @ 1500 x 3

Sumagic Less than 15 x 3

Dendranthema zawadskii 'Clara Curtis' Garden Mum B-Nine Multiple at 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1 Multiple applications required.

Bonzi Less than 40 x 1 Sensitive to Bonzi. Test rates less than 40 ppm.

Sumagic Less than 15 x 1 Sensitive to Sumagic.Test rates less than 15 ppm.

Dicentra spectabilis Common Bleeding Heart A-Rest 50 x 2 Phytotoxic, leaf tip chlorosis.

B-Nine 3000 x 2 Slight delay in flowering

Cycocel NR @ 2000 x 2

Digitalis purpurea 'Foxy' Common Foxglove B-Nine NR @ 5000 x 4

B-Nine/Cycocel NR @ 5000/1500 x 1

Bonzi 80 to 160 x 1

Bonzi 2 to 4 x 1 (drench)

Sumagic 30 to 45 x 1

Duranta repens Golden Dewdrop Bonzi Greater than 100 x 1

Echinacea purpurea 'Bravado' Purple Coneflower A-Rest 100 x 5

B-Nine multiple @ 5000 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Bonzi Greater than 30 x 1 (drench)

Cycocel 1500 x 5 Discolored leaves.

Florel 500 x 3 Flower size reduced.

Sumagic Much less than 40 x 1 Very sensitive to Sumagic. Test rates below 30 ppm

Echinacea purpurea 'Magnus' Purple Coneflower B-Nine 5000 x 2 May require multiple applications at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Florel 500 x 2

Sumagic NR @ 20 x 1

Eupatorium coelestinum Hardy Ageratum B-Nine NR @ 5000 x 2

Bonzi NR @ 240 x 1

Bonzi 8 to 10 x 1 (drench)

Sumagic 60 x 1

Gaillardia x grandiflora 'Burgundy' Blanket Flower B-Nine 5000 x 3 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi Greater than 30 x 4

Sumagic 60 x 1 Moderate control. May require multiple applications.

Gaillardia x grandiflora 'Goblin' Blanket Flower B-Nine NR @ 5000 x 2

B-Nine/Cycocel 5000/1500 x 1 Moderate control. Multiple applications may be required.

Bonzi NR @ 160 x 1

Florel NR @ 500 x 2

Sumagic NR @ 60 x 1

Gaura lindheimeri 'Corrie's Gold' Gaura B-Nine 5000 x 2 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi 80 x 1

Florel 500-1000 x 1 May delay flowering.

Sumagic 30 x 1 May require multiple applications.

Gaura lindheimeri 'Siskiyou Pink' Gaura B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Bonzi 2500/8 x 1

B-Nine/Cycocel 5000/1500 x 1

Bonzi Greater than 30 x 4

Bonzi Greater than15 x 1 (drench)

Sumagic NR @ 60 x 1 Plant width reduced.

Gaura lindheimeri 'Whirling Butterflies' Gaura B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1 Moderate control; multiple applications may be required.

Sumagic 15 x 1 Test rates below 15 ppm.

Gypsophila paniculata 'Double Snowflake' Baby's Breath B-Nine NR @ 5000 x 4

Bonzi Greater than 30 x 4

Helenium autumnale Sneezeweed B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Heliopsis helianthoides 'Summer Sun' False Sunflower, Sunflower Heliopsis B-Nine Less than 5000 x 2 Sensitive to B-Nine. Test lower rate. Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi NR @ 160 x 1

Bonzi 30 x 1 (drench)

Florel 500 x 2 Moderate control.

Sumagic NR @ 60 x 1

Heliotropium arborescens 'Fragrant Blue' Heliotrope B-Nine 5000 x 3 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Sumagic 60 x 1

Hemerocallis x 'Halls Pink' Daylily B-Nine NR @ 5000 x 4

Bonzi Greater than 30 x 4

Bonzi Greater than 30 x 1 (drench)

Heuchera sanguinea 'Bressingham Hybrids' Coral Bells B-Nine NR @ 5000 x 4

Bonzi Greater than 30 x 4

Hibiscus moscheutos 'Disco Belle Mixed' Rose Mallow Cycocel 1000 x 4 Multiple applications necessary.

Sumagic 15 x 4 Multiple applications necessary.

Hypericum calycinum Aaron's Beard, St. John's Wort B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/1500 x 1

Bonzi NR @ 160 x 1

Sumagic 30 x 1

Iris x germanica Bearded Iris Bonzi Greater than 160 x 1

Bonzi Greater than 4 x 1 (drench)

Kniphofia uvaria 'Bressingham Comet' Red Hot Poker, Torchlily B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/1500 x 1

Bonzi NR @ 160 x 1

Cycocel NR @ 4000x 1

Sumagic 45 x 1

Lantana camara 'Confetti' Lantana B-Nine 5000 x 3 Moderate control. Apply at 10-14 day intervals.

B-Nine/Cycocel NR @ 5000/1500 x 1

Sumagic 30 x 1 Moderate control.

Lavandula angustifolia 'Munstead Dwarf' Common Lavender A-Rest Less than 100 x 3 Reduce rate or frequency.

B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Cycocel NR @ 1500 x 3

Sumagic 5 to 10 x 3

Leucanthemum x superbum 'Alaska' Shasta Daisy B-Nine NR @ 5000 x2

Bonzi Less than 40 x 1 Sensitive to Bonzi. Test rates below 40 ppm.

Cycocel NR @ 4000 x 1

Sumagic Less than 15 x 1 Sensitive to Sumagic. Test rates below 15 ppm.

Leucanthemum x superbum 'Becky' Shasta Daisy B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/1500 x 1

Bonzi NR @ 100 x 1

Cycocel NR @ 4000 x 1

Sumagic NR @ 60 x 1

Leucanthemum x superbum 'Snow Lady' Shasta Daisy Bonzi Greater than 40 x 1

Leucanthemum x superbum 'Thomas Killen' Shasta Daisy Florel 500 x 3 Flower size and plant quality reduced.

Liatris spicata 'Floristan Violet' Spike Gayfeather Bonzi NR @ 160 x 1

Sumagic NR @ 60 x 1

Liatris spicata 'Kobold' Spike Gayfeather Florel 1000 x 3 Response small and inconsistent: flowering delayed

Linum perenne 'Sapphire' Perennial Flax B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi >30 x 4

Lobelia cardinalis Cardinal Flower B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/4000 x 1

Bonzi NR @ 60 x 1

Sumagic 30 x 1

Lobelia x speciosa 'Compliment Scarlet 'Queen Victoria' Hybrid Lobelia A-Rest Less than 100 x 3 Reduce rate or frequency.

B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 1 May require multiple applications.

Cycocel 1500 x 3

Sumagic Much less than 15 x 3 Very sensitive to Sumagic. Test rates much lower than 15 ppm.

Lythrum virgatum 'Morden Pink Purple Loosestrife B-Nine 5000 x 2

Florel NR @ 500 x 2

Sumagic 15 x 2

Malva alcea Hollyhock Mallow B-Nine NR @ 5000 x 2

Bonzi Much lower than 40 ppm x 1 Very sensitive to Bonzi. Test rates around 10 to 20 ppm.

Cycocel 750-1500 x 1

Sumagic Much lower than 15 ppm x 1 Very sensitive to Sumagic. Test rates around 2 to 5 ppm.

Monarda didyma 'Blue Stocking' Bee-Balm B-Nine NR @ 5000 x 2

Bonzi NR @ 160 x 1

Cycocel NR @ 4000 x 1

Florel 500 x 3 Phytotoxic at 1000 ppm; use with caution; reduced number of flowers.

Sumagic 15-30 x 1

Monarda didyma 'Marshall's Delight' Bee-Balm B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Sumagic 30 x 1

Monarda citriodora Bee-Balm Bonzi 60-100 x 1

Bonzi Greater than 4 x 1 (drench)

Nepeta x faassenii 'Six Hills Giant' Faassen Nepeta, Catmint B-Nine 5000 x 2

Bonzi 30 x 2 May require multiple applications.

Cycocel NR @ 1500 x 2

Florel 500 x 2 May require multiple applications.

Sumagic 15 x 2

Pachystachys lutea Golden Shrimp Plant Bonzi 200 x 1

Bonzi Less than 10 x 1 (drench)

Pentas lanceolata 'Orchid Illusion' 'Lavender' 'Red' Pentas B-Nine 5000 x 3 'Orchid Illusion' more sensitive to B-Nine; 'Red' less sensitive to B-Nine

B-Nine/Cycocel 1500/ 1500 x 1

Bonzi Greater than 45 x 1

Bonzi Greater than 16 x 1 (drench)

Perovskia atriplicifolia Russian Sage B-Nine multiple @ 5000 Delayed flowering. Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi Greater than 30 x 4

Bonzi Greater than 30 x 1 (drench)

Florel 500 x 2 Delayed flowering.

Sumagic 15 to 30 x 1

Phlox paniculata 'Bright Eyes' Garden Phlox B-Nine multiple @ 5000 Apply at 10-14 day intervals.

Phlox paniculata 'Blue Boy' 'Charles Curtis' Garden Phlox B-Nine NR @ 5000 x 2 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/4000 x 1 Multiple applications required.

Bonzi NR @ 160 x 1

Cycocel NR @ 4000 x 1

Sumagic NR @ 60 x 1

Phlox paniculata 'David' Garden Phlox B-Nine 5000 x 2 Moderate control. Apply at 10-14 day intervals.

B-Nine/Cycocel NR @ 5000/1500 x 1

Sumagic 60 x 1

Phlox paniculata 'Joliet' Garden Phlox B-Nine NR @ 5000 x 2

Bonzi NR @ 240 x 1

Sumagic Greater than 80 x 1 Persistent reductions in plant growth continue in the landscape at 80 ppm.

Phlox paniculata 'Mt. Fuji' Garden Phlox Florel NR @ 1000 x 3

Phlox paniculata 'Eva Cullum' Garden Phlox B-Nine NR @ 5000 x 4

Bonzi Greater than 30 x 4

Physostegia virginiana 'Summer Snow' Obedient Plant A-Rest NR @ 100 x 7

B-Nine NR @ 5000 x 4

Bonzi NR @ 100 x 1, NR @ 30 x 7

Cycocel NR @ 1500 x 7

Florel 500 x 3 Delayed flowering.

Sumagic NR @ 15 x 7 For 'Alba': 25 x 1 drench was effective.

Platycodon grandiflorus 'Fuji White' Balloon Flower Bonzi Greater than 50 x 1

Bonzi Greater than 1.5 x 1 (drench)

Polemonium caeruleum Jacob's Ladder B-Nine Greater than 2500 x 1 Apply at 10-14 day intervals.

B-Nine/Bonzi 2500/15 x 1

B-Nine/Cycocel 2500/1500 x 1

Bonzi Greater than 15 x 1

Rudbeckia fulgida var. sullivantii 'Goldsturm' Black-eyed-Susan, Orange Coneflower B-Nine NR @ 5000 x 4

B-Nine/Cycocel 5000/1500 x 1

Bonzi Greater than160 x 1 or Greater than 30 x 4

Bonzi Greater than 30 x 1 (drench)

Cycocel NR @ 4000 x 1

Sumagic 30 x 1

Rudbeckia triloba Three-lobed Coneflower B-Nine 5000 x 2 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi 80 x 1 Multiple applications required.

Cycocel 2000 x 1 No phytotoxicity noted; multiple applications may be required.

Sumagic 30 x 1

Salvia farinacea 'Victoria Blue' Mealy-cup Sage B-Nine NR @ 5000 x 1

Bonzi 48 to 64 x 1

Florel 500 to 750 x 1

Sumagic 5 to 15 x 1

Salvia greggii Texas Sage B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi Greater than 6 x 1 (drench)

Sumagic Less than 15 x 1 No landscape persistence at 15 ppm.

Salvia leucantha Velvet Sage, Mexican Sage B-Nine 5000 x 3 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi 60 x 1

Cycocel 2250 x 1

Florel 500 x 1

Sumagic 30 x 1 No landscape persistence at 30 ppm.

Salvia x sylvestris 'Blue Queen' Hybrid Sage B-Nine 5000 x 4 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1000 x 1 Excessive height reduction. Test B-Nine concentration at 2500 ppm.

Bonzi Greater than 30 x 4 120 x 1
Greater than 30 x 1 (drench)

Sumagic Greater than 60 x 1 Multiple applications may be required.

Salvia x sylvestris 'May Night' Hybrid Sage B-Nine 5000 x 2

Florel 250 to 1000 x 1 Some delay in flowering with eventual increase in inflorescence numbers.

Sumagic NR @ 20 x 1

Bonzi NR @ 160 x 1

Saponaria ocymoides Rock Soapwort Cycocel NR @ 4000 x 1

Scabiosa caucasica 'House Hybrids' Pincushion Flower B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/1500 x 1

Bonzi NR @ 160 x 1

Cycocel NR @ 4000 x 1

Sumagic NR @ 60 x 1

Scabiosa columbaria 'Butterfly Blue' Pincushion Flower B-Nine NR @ 5000 x 2

B-Nine/Cycocel NR @ 5000/1500 x 1

Florel 250-750 x 1 Higher rates delay flowering.

Sumagic 20 x 1

Sedum x 'Autumn Joy' Autumn Joy Sedum B-Nine 5000 x 2 Moderate control. Apply at 10-14 day intervals.

B-Nine/Bonzi Greater than 2500/40 x 1

B-Nine/Cycocel 5000/1500 x 1 Moderate control

Bonzi 80 x 1

Cycocel NR @ 4000 x 1

Sumagic 15-30 x 1 Persistent reductions in plant growth continue in the landscape.

Sedum spurium 'Dragon's Blood' Two Row Stonecrop B-Nine NR @ 5000 x 4

Bonzi Greater than 30 x 4

Bonzi 30 x 1 (drench)

Solidago sphacelata 'Golden Fleece' Golden Rod B-Nine multiple @ 5000 Apply at 10-14 day intervals.

Bonzi 80 to 100 x 1 Persistent reductions in plant growth continue in the landscape with rates above 100 ppm.

Bonzi Greater than 30 x 1 (drench)

Sumagic Less than 30 x 1 Persistent reductions in plant growth continue in the landscape with 30 ppm.

x Solidaster luteus 'Tara' Golden Aster B-Nine Greater than 2500 x 1

B-Nine/Bonzi Greater than 2500/40 x 1

B-Nine/Cycocel Greater than 2500/1500 x 1

Bonzi Greater than 40 x 1

Stokesia laevis 'Klaus Jelitto' Stoke's Aster B-Nine 5000 x 2 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1 Moderate control. Apply at 10-14 day intervals.

Sumagic NR @ 60 x 1

Stokesia laevis 'Purple Parasols' Stoke's Aster B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/2250 x 1

Bonzi 40-80 x 1

Cycocel NR @ 4000 x 1

Sumagic NR @ 60 x 1

Verbena bonariensis South American Verbena, Tall Verbena B-Nine multiple @ 5000 Apply at 10-14 day intervals.

Bonzi 120 to 160 x 1

Cycocel NR @ 4000 x 1

Sumagic 30 to 45 x 1 Persistent reductions in plant growth continue in the landscape.

Verbena canadensis 'Homestead Purple' Clump Verbena B-Nine NR @ 5000 x 2

B-Nine/Cycocel 5000/1500 x 1 Multiple applications may be required.

Bonzi Greater than 3 x 1 (drench)

Florel 500-1000 x 1 High rates delay flowering.

Veronica alpina 'Goodness Grows' Alpine Speedwell B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi Less than 240 x 1 Test rates below 240 ppm.

Sumagic Less than 15 x 1 Persistent reductions in plant growth continue in the landscape at 15 ppm.

Veronica peduncularis 'Georgia Blue' Veronica Speedwell B-Nine Greater than 2500 x 1 Apply at 10-14 day intervals.

B-Nine/Bonzi 2500/7.5 x 2

Bonzi Greater than 15 x 1

Veronica spicata 'Blue' Spike Speedwell B-Nine 5000 x 4 Apply at 10-14 day intervals.

Bonzi Greater than 30 x 4

Veronica spicata 'Red Fox' Spike Speedwell B-Nine multiple @ 5000 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 2

Bonzi Less than 40 x 1

Cycocel NR @ 4000 x 1

Sumagic Less than 15 x 1

Veronica x 'Sunny Border Blue' Hybrid Speedwell A-Rest Less than 100 x 3 Reduce rate or frequency.

B-Nine 5000 x 2 Apply at 10-14 day intervals.

B-Nine/Cycocel 5000/1500 x 1

Bonzi Much less than 40 x 1 Very sensitive to Bonzi. Test rates below 20 ppm.

Bonzi Greater than 30 x 1 (drench)

Cycocel 750-1500 x 1

Sumagic Less than 15 x 1 Very sensitive to Sumagic. Persistent reductions in plant growth continue in the landscape at 15 ppm.

NR = non-responsive at rates listed
*Rates given are for spray applications at label recommended volumes unless stated otherwise. Not all uses listed are on the label. Check product label before using.
^zPGRs are not labeled for use on edible herbs. Specify for ornamental use only.

Crop	Common Name	Product	Spray Rate (ppm) x No. Applications*	Precautions & Remarks
Achillea x 'Coronation Gold'	Yarrow	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	30 to 40 x 1
	Cycocel	NR @ 4000 x 1
	Florel	500 x 1	Delayed flowering. Apply before visible bud.
	Sumagic	Less than 15 x 1	Persistent reductions in plant growth continue in the landscape.
Achillea x 'Moonshine'	Yarrow	B-Nine	NR @ 5000 x 2
	Bonzi	Much less than 240 x 1	This rate caused excessive height reduction. Test rates much lower than 240 ppm.
	Sumagic	NR @ 60 x 1
Achillea x 'Paprika'	Yarrow	B-Nine	multiple @ 5000	Apply at 10-14 day intervals. May delay flowering.
	B-Nine/Cycocel	5000/1500 x 1
	Sumagic	15 x 1	Plant width also reduced.
Achillea x 'Summer Pastels'	Yarrow	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	120 x 1 greater than 30 x 4
	Cycocel	NR @ 4000 x 1
	Sumagic	NR @ 60 x 1
Achillea millefolium 'Weser River Sandstone'	Yarrow	Florel	1000 x 3	Increased number of flowers; height control moderate.
Agapanthus	African Lily	Bonzi	Greater than 30 x 1 (drench)
Agastache x 'Blue Fortune'^z	Anise Hyssop	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Sumagic	Less than 15 x 1	Very sensitive to Sumagic. Apply at rates much lower than 15 ppm.
Alcea rosea 'Powder Puff Mix' 'Chater's Double Mix'	Hollyhock	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	30 to 50 x 1
	Bonzi	1.5 x 1 (drench)
	Florel	500 x 2
	Sumagic	Much less than 15 x 1	Very sensitive to Sumagic. Test rates much lower than 15 ppm.
Aquilegia x hybrida 'McKana Giants'	Hybrid Columbine	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	Bonzi	NR @ 240 x 1
	Sumagic	NR @ 120 x 1
Asclepias tuberosa 'Royal Red'	Butterfly Weed	B-Nine	5000 x 3-4	Apply at 10-14 day intervals.
	Bonzi	30 x 4
Aster x frikartii 'Monch' 'Monarch' 'Alpine Mix'	Frikart's Aster	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	NR @ 240 x 1; NR @ 30 x 4
	Bonzi	12-16 x 1 (drench)
	Sumagic	NR @ 60 x 1
Astilbe x arendsii 'Bressingham Beauty'	Hybrid Astilbe	B-Nine	5000 x 4	Apply weekly beginning just after inflorescence begins to elongate.
	Bonzi	Greater than 30 x 4
	Bonzi	30 x 1 (drench)
Baptisia	False Indigo	Bonzi	30 x 1 (drench)
Barleria cristata	Phillippine Violet	B-Nine	5000 x 3	Apply at 10-14 day intervals.
	Bonzi	Greater than 45 x 1
Boltonia asteroids	Bolton's Aster	Bonzi	>30 x 1 (drench)
Buddleia davidii 'Pink Delight'	Butterfly Bush	Bonzi	Greater than30 x 1 (drench)
	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Sumagic	NR @ 60 x 1
Buddleia davidii 'Royal Red'	Butterfly Bush	A-Rest	Much less than 100 x 4	Excessive height reduction. Reduce rate or frequency.
	B-Nine	multiple @ 5000	Moderate control. Apply at 10-14 day intervals.
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Bonzi	Greater than 40 x 1
	Bonzi	5 x 1 (drench)
	Sumagic	NR @ 60 x 1
Campanula carpatica 'Blue Chips'	Carpathian Harebell	B-Nine	5000 x 2 to 4	Apply at 10-14 day intervals.
	Bonzi	Much less than 30 x 4	Excessive height reduction. Reduce rate or frequency.
	Cycocel	Much less than 1500 x 4	Excessive height reduction. Reduce rate or frequency.
	Sumagic	Much less than 15 x 4	Excessive height reduction. Reduce rate or frequency.
Campanula persicifolia 'Blue	Peachleaf Bellflower	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
Canna x generalis 'Florence Vaughan'	Hybrid Canna	B-Nine	NR @ 7500 x 1
	Bonzi	66 x 1
	Florel	NR @ 1000 x 1
Canna x orchiodes	Hybrid Canna	B-Nine	NR @ 7500 x 1	Delayed flowering.
	Bonzi	66 to 99 x 1
	Florel	NR @ 1000 x 1
Centaurea montana 'Violet'	Mountain Bluet	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
Chelone glabra	White Turtle-head	B-Nine	NR @ 5000 x 4
	Bonzi	Greater than 30 x 4
	Bonzi	30 x 1 (drench)
Chrysanthemum coccineum 'James Kelway'	Painted Daisy	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
	Bonzi	Greater than 30 x 1 (drench)
	Bonzi	Much less than 40 x 1	Very sensitive to Bonzi. Test rates much lower than 40 ppm.
Chrysanthemum parthenium	Feverfew	Cycocel	750 x 1
	Sumagic	Much lower than 15 x 1	Very sensitive to Sumagic. Test rates much lower than 15 ppm
Coreopsis grandiflora 'Sunray' 'Baby Sun'	Tickseed	A-Rest	NR @ 100 x 3
	B-Nine	5000 x 3	May delay flowering. Apply at 10-14 day intervals.
	B-Nine/Bonzi	2500/20 to 40 x 1
	B-Nine/Cycocel	Greater than 2500/1500 x 1
	Bonzi	80 to 100 x 1
	Bonzi	5 to 10 x 1 (drench)
	Cycocel	NR @ 1500 x 3
	Sumagic	40 x 1 or 15 x 2	May delay flowering
Coreopsis rosea	Pink coreopsis	B-Nine	7500 x 1
	Bonzi	NR @ 100 x 1
	Bonzi	Greater than 4 x 1 (drench)
	Sumagic	40 x 1
Coreopsis verticillata 'Moonbeam'	Thread Leaf Coreopsis	A-Rest	NR @ 100 x 4
	B-Nine	5000 x 2	Some flower delay. Apply at 10-14 day intervals.
	Bonzi	NR @ 160 x 1
	Cycocel	NR @ 1500 x 4
	Florel	NR @ 1000 x 3
	Sumagic	15 x 4
Coreopsis verticillata 'Zagreb'	Thread Leaf Coreopsis	B-Nine	5000 x 2
	B-Nine/Cycocel	5000/1500 x 1
	Florel	NR @ 500 x 2
	Sumagic	20 x 1
Cortaderia selloana	Pampas Grass	A-Rest	30 x 1 (drench)
	Bonzi	15 x 1 (drench)
	Sumagic	Much lower than 1 x 1	Very sensitive to Sumagic. Test rates below 1 ppm.
Crocosmia	Montbretia	B-Nine	NR @ 5000 x 4
Delphinium x elatum 'Magic Fountains'	Hybrid Bee Delphinium	A-Rest	NR @ 100 x 3
	B-Nine	NR @ 5000 x 3
	Bonzi	Less than 30 x 4
	Bonzi	Greater than30 x 1 (drench)
	Cycocel	NR @ 1500 x 3
	Sumagic	Less than 15 x 3
Dendranthema zawadskii 'Clara Curtis'	Garden Mum	B-Nine	Multiple at 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1	Multiple applications required.
	Bonzi	Less than 40 x 1	Sensitive to Bonzi. Test rates less than 40 ppm.
	Sumagic	Less than 15 x 1	Sensitive to Sumagic.Test rates less than 15 ppm.
Dicentra spectabilis	Common Bleeding Heart	A-Rest	50 x 2	Phytotoxic, leaf tip chlorosis.
	B-Nine	3000 x 2	Slight delay in flowering
	Cycocel	NR @ 2000 x 2
Digitalis purpurea 'Foxy'	Common Foxglove	B-Nine	NR @ 5000 x 4
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Bonzi	80 to 160 x 1
	Bonzi	2 to 4 x 1 (drench)
	Sumagic	30 to 45 x 1
Duranta repens	Golden Dewdrop	Bonzi	Greater than 100 x 1
Echinacea purpurea 'Bravado'	Purple Coneflower	A-Rest	100 x 5
	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
	Bonzi	Greater than 30 x 1 (drench)
	Cycocel	1500 x 5	Discolored leaves.
	Florel	500 x 3	Flower size reduced.
	Sumagic	Much less than 40 x 1	Very sensitive to Sumagic. Test rates below 30 ppm
Echinacea purpurea 'Magnus'	Purple Coneflower	B-Nine	5000 x 2	May require multiple applications at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Florel	500 x 2
	Sumagic	NR @ 20 x 1
Eupatorium coelestinum	Hardy Ageratum	B-Nine	NR @ 5000 x 2
	Bonzi	NR @ 240 x 1
	Bonzi	8 to 10 x 1 (drench)
	Sumagic	60 x 1
Gaillardia x grandiflora 'Burgundy'	Blanket Flower	B-Nine	5000 x 3	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Greater than 30 x 4
	Sumagic	60 x 1	Moderate control. May require multiple applications.
Gaillardia x grandiflora 'Goblin'	Blanket Flower	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	5000/1500 x 1	Moderate control. Multiple applications may be required.
	Bonzi	NR @ 160 x 1
	Florel	NR @ 500 x 2
	Sumagic	NR @ 60 x 1
Gaura lindheimeri 'Corrie's Gold'	Gaura	B-Nine	5000 x 2	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	80 x 1
	Florel	500-1000 x 1	May delay flowering.
	Sumagic	30 x 1	May require multiple applications.
Gaura lindheimeri 'Siskiyou Pink'	Gaura	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Bonzi	2500/8 x 1
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Greater than 30 x 4
	Bonzi	Greater than15 x 1 (drench)
	Sumagic	NR @ 60 x 1	Plant width reduced.
Gaura lindheimeri 'Whirling Butterflies'	Gaura	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1	Moderate control; multiple applications may be required.
	Sumagic	15 x 1	Test rates below 15 ppm.
Gypsophila paniculata 'Double Snowflake'	Baby's Breath	B-Nine	NR @ 5000 x 4
	Bonzi	Greater than 30 x 4
Helenium autumnale	Sneezeweed	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
Heliopsis helianthoides 'Summer Sun'	False Sunflower, Sunflower Heliopsis	B-Nine	Less than 5000 x 2	Sensitive to B-Nine. Test lower rate. Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	NR @ 160 x 1
	Bonzi	30 x 1 (drench)
	Florel	500 x 2	Moderate control.
	Sumagic	NR @ 60 x 1
Heliotropium arborescens 'Fragrant Blue'	Heliotrope	B-Nine	5000 x 3	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Sumagic	60 x 1
Hemerocallis x 'Halls Pink'	Daylily	B-Nine	NR @ 5000 x 4
	Bonzi	Greater than 30 x 4
	Bonzi	Greater than 30 x 1 (drench)
Heuchera sanguinea 'Bressingham Hybrids'	Coral Bells	B-Nine	NR @ 5000 x 4
	Bonzi	Greater than 30 x 4
Hibiscus moscheutos 'Disco Belle Mixed'	Rose Mallow	Cycocel	1000 x 4	Multiple applications necessary.
	Sumagic	15 x 4	Multiple applications necessary.
Hypericum calycinum	Aaron's Beard, St. John's Wort	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Bonzi	NR @ 160 x 1
	Sumagic	30 x 1
Iris x germanica	Bearded Iris	Bonzi	Greater than 160 x 1
	Bonzi	Greater than 4 x 1 (drench)
Kniphofia uvaria 'Bressingham Comet'	Red Hot Poker, Torchlily	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Bonzi	NR @ 160 x 1
	Cycocel	NR @ 4000x 1
	Sumagic	45 x 1
Lantana camara 'Confetti'	Lantana	B-Nine	5000 x 3	Moderate control. Apply at 10-14 day intervals.
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Sumagic	30 x 1	Moderate control.
Lavandula angustifolia 'Munstead Dwarf'	Common Lavender	A-Rest	Less than 100 x 3	Reduce rate or frequency.
	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
	Cycocel	NR @ 1500 x 3
	Sumagic	5 to 10 x 3
Leucanthemum x superbum 'Alaska'	Shasta Daisy	B-Nine	NR @ 5000 x2
	Bonzi	Less than 40 x 1	Sensitive to Bonzi. Test rates below 40 ppm.
	Cycocel	NR @ 4000 x 1
	Sumagic	Less than 15 x 1	Sensitive to Sumagic. Test rates below 15 ppm.
Leucanthemum x superbum 'Becky'	Shasta Daisy	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Bonzi	NR @ 100 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	NR @ 60 x 1
Leucanthemum x superbum 'Snow Lady'	Shasta Daisy	Bonzi	Greater than 40 x 1
Leucanthemum x superbum 'Thomas Killen'	Shasta Daisy	Florel	500 x 3	Flower size and plant quality reduced.
Liatris spicata 'Floristan Violet'	Spike Gayfeather	Bonzi	NR @ 160 x 1
	Sumagic	NR @ 60 x 1
Liatris spicata 'Kobold'	Spike Gayfeather	Florel	1000 x 3	Response small and inconsistent: flowering delayed
Linum perenne 'Sapphire'	Perennial Flax	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	>30 x 4
Lobelia cardinalis	Cardinal Flower	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/4000 x 1
	Bonzi	NR @ 60 x 1
	Sumagic	30 x 1
Lobelia x speciosa 'Compliment Scarlet 'Queen Victoria'	Hybrid Lobelia	A-Rest	Less than 100 x 3	Reduce rate or frequency.
	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 1	May require multiple applications.
	Cycocel	1500 x 3
	Sumagic	Much less than 15 x 3	Very sensitive to Sumagic. Test rates much lower than 15 ppm.
Lythrum virgatum 'Morden Pink	Purple Loosestrife	B-Nine	5000 x 2
	Florel	NR @ 500 x 2
	Sumagic	15 x 2
Malva alcea	Hollyhock Mallow	B-Nine	NR @ 5000 x 2
	Bonzi	Much lower than 40 ppm x 1	Very sensitive to Bonzi. Test rates around 10 to 20 ppm.
	Cycocel	750-1500 x 1
	Sumagic	Much lower than 15 ppm x 1	Very sensitive to Sumagic. Test rates around 2 to 5 ppm.
Monarda didyma 'Blue Stocking'	Bee-Balm	B-Nine	NR @ 5000 x 2
	Bonzi	NR @ 160 x 1
	Cycocel	NR @ 4000 x 1
	Florel	500 x 3	Phytotoxic at 1000 ppm; use with caution; reduced number of flowers.
	Sumagic	15-30 x 1
Monarda didyma 'Marshall's Delight'	Bee-Balm	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Sumagic	30 x 1
Monarda citriodora	Bee-Balm	Bonzi	60-100 x 1
	Bonzi	Greater than 4 x 1 (drench)
Nepeta x faassenii 'Six Hills Giant'	Faassen Nepeta, Catmint	B-Nine	5000 x 2
	Bonzi	30 x 2	May require multiple applications.
	Cycocel	NR @ 1500 x 2
	Florel	500 x 2	May require multiple applications.
	Sumagic	15 x 2
Pachystachys lutea	Golden Shrimp Plant	Bonzi	200 x 1
	Bonzi	Less than 10 x 1 (drench)
Pentas lanceolata 'Orchid Illusion' 'Lavender' 'Red'	Pentas	B-Nine	5000 x 3	'Orchid Illusion' more sensitive to B-Nine; 'Red' less sensitive to B-Nine
	B-Nine/Cycocel	1500/ 1500 x 1
	Bonzi	Greater than 45 x 1
	Bonzi	Greater than 16 x 1 (drench)
Perovskia atriplicifolia	Russian Sage	B-Nine	multiple @ 5000	Delayed flowering. Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Greater than 30 x 4
	Bonzi	Greater than 30 x 1 (drench)
	Florel	500 x 2	Delayed flowering.
	Sumagic	15 to 30 x 1
Phlox paniculata 'Bright Eyes'	Garden Phlox	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
Phlox paniculata 'Blue Boy' 'Charles Curtis'	Garden Phlox	B-Nine	NR @ 5000 x 2	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/4000 x 1	Multiple applications required.
	Bonzi	NR @ 160 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	NR @ 60 x 1
Phlox paniculata 'David'	Garden Phlox	B-Nine	5000 x 2	Moderate control. Apply at 10-14 day intervals.
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Sumagic	60 x 1
Phlox paniculata 'Joliet'	Garden Phlox	B-Nine	NR @ 5000 x 2
	Bonzi	NR @ 240 x 1
	Sumagic	Greater than 80 x 1	Persistent reductions in plant growth continue in the landscape at 80 ppm.
Phlox paniculata 'Mt. Fuji'	Garden Phlox	Florel	NR @ 1000 x 3
Phlox paniculata 'Eva Cullum'	Garden Phlox	B-Nine	NR @ 5000 x 4
	Bonzi	Greater than 30 x 4
Physostegia virginiana 'Summer Snow'	Obedient Plant	A-Rest	NR @ 100 x 7
	B-Nine	NR @ 5000 x 4
	Bonzi	NR @ 100 x 1, NR @ 30 x 7
	Cycocel	NR @ 1500 x 7
	Florel	500 x 3	Delayed flowering.
	Sumagic	NR @ 15 x 7	For 'Alba': 25 x 1 drench was effective.
Platycodon grandiflorus 'Fuji White'	Balloon Flower	Bonzi	Greater than 50 x 1
	Bonzi	Greater than 1.5 x 1 (drench)
Polemonium caeruleum	Jacob's Ladder	B-Nine	Greater than 2500 x 1	Apply at 10-14 day intervals.
	B-Nine/Bonzi	2500/15 x 1
	B-Nine/Cycocel	2500/1500 x 1
	Bonzi	Greater than 15 x 1
Rudbeckia fulgida var. sullivantii 'Goldsturm'	Black-eyed-Susan, Orange Coneflower	B-Nine	NR @ 5000 x 4
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Greater than160 x 1 or Greater than 30 x 4
	Bonzi	Greater than 30 x 1 (drench)
	Cycocel	NR @ 4000 x 1
	Sumagic	30 x 1
Rudbeckia triloba	Three-lobed Coneflower	B-Nine	5000 x 2	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	80 x 1	Multiple applications required.
	Cycocel	2000 x 1	No phytotoxicity noted; multiple applications may be required.
	Sumagic	30 x 1
Salvia farinacea 'Victoria Blue'	Mealy-cup Sage	B-Nine	NR @ 5000 x 1
	Bonzi	48 to 64 x 1
	Florel	500 to 750 x 1
	Sumagic	5 to 15 x 1
Salvia greggii	Texas Sage	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Greater than 6 x 1 (drench)
	Sumagic	Less than 15 x 1	No landscape persistence at 15 ppm.
Salvia leucantha	Velvet Sage, Mexican Sage	B-Nine	5000 x 3	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	60 x 1
	Cycocel	2250 x 1
	Florel	500 x 1
	Sumagic	30 x 1	No landscape persistence at 30 ppm.
Salvia x sylvestris 'Blue Queen'	Hybrid Sage	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1000 x 1	Excessive height reduction. Test B-Nine concentration at 2500 ppm.
	Bonzi	Greater than 30 x 4 120 x 1 Greater than 30 x 1 (drench)
	Sumagic	Greater than 60 x 1	Multiple applications may be required.
Salvia x sylvestris 'May Night'	Hybrid Sage	B-Nine	5000 x 2
	Florel	250 to 1000 x 1	Some delay in flowering with eventual increase in inflorescence numbers.
	Sumagic	NR @ 20 x 1
	Bonzi	NR @ 160 x 1
Saponaria ocymoides	Rock Soapwort	Cycocel	NR @ 4000 x 1
Scabiosa caucasica 'House Hybrids'	Pincushion Flower	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Bonzi	NR @ 160 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	NR @ 60 x 1
Scabiosa columbaria 'Butterfly Blue'	Pincushion Flower	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	NR @ 5000/1500 x 1
	Florel	250-750 x 1	Higher rates delay flowering.
	Sumagic	20 x 1
Sedum x 'Autumn Joy'	Autumn Joy Sedum	B-Nine	5000 x 2	Moderate control. Apply at 10-14 day intervals.
	B-Nine/Bonzi	Greater than 2500/40 x 1
	B-Nine/Cycocel	5000/1500 x 1	Moderate control
	Bonzi	80 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	15-30 x 1	Persistent reductions in plant growth continue in the landscape.
Sedum spurium 'Dragon's Blood'	Two Row Stonecrop	B-Nine	NR @ 5000 x 4
	Bonzi	Greater than 30 x 4
	Bonzi	30 x 1 (drench)
Solidago sphacelata 'Golden Fleece'	Golden Rod	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	Bonzi	80 to 100 x 1	Persistent reductions in plant growth continue in the landscape with rates above 100 ppm.
	Bonzi	Greater than 30 x 1 (drench)
	Sumagic	Less than 30 x 1	Persistent reductions in plant growth continue in the landscape with 30 ppm.
x Solidaster luteus 'Tara'	Golden Aster	B-Nine	Greater than 2500 x 1
	B-Nine/Bonzi	Greater than 2500/40 x 1
	B-Nine/Cycocel	Greater than 2500/1500 x 1
	Bonzi	Greater than 40 x 1
Stokesia laevis 'Klaus Jelitto'	Stoke's Aster	B-Nine	5000 x 2	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1	Moderate control. Apply at 10-14 day intervals.
	Sumagic	NR @ 60 x 1
Stokesia laevis 'Purple Parasols'	Stoke's Aster	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/2250 x 1
	Bonzi	40-80 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	NR @ 60 x 1
Verbena bonariensis	South American Verbena, Tall Verbena	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	Bonzi	120 to 160 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	30 to 45 x 1	Persistent reductions in plant growth continue in the landscape.
Verbena canadensis 'Homestead Purple'	Clump Verbena	B-Nine	NR @ 5000 x 2
	B-Nine/Cycocel	5000/1500 x 1	Multiple applications may be required.
	Bonzi	Greater than 3 x 1 (drench)
	Florel	500-1000 x 1	High rates delay flowering.
Veronica alpina 'Goodness Grows'	Alpine Speedwell	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Less than 240 x 1	Test rates below 240 ppm.
	Sumagic	Less than 15 x 1	Persistent reductions in plant growth continue in the landscape at 15 ppm.
Veronica peduncularis 'Georgia Blue'	Veronica Speedwell	B-Nine	Greater than 2500 x 1	Apply at 10-14 day intervals.
	B-Nine/Bonzi	2500/7.5 x 2
	Bonzi	Greater than 15 x 1
Veronica spicata 'Blue'	Spike Speedwell	B-Nine	5000 x 4	Apply at 10-14 day intervals.
	Bonzi	Greater than 30 x 4
Veronica spicata 'Red Fox'	Spike Speedwell	B-Nine	multiple @ 5000	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 2
	Bonzi	Less than 40 x 1
	Cycocel	NR @ 4000 x 1
	Sumagic	Less than 15 x 1
Veronica x 'Sunny Border Blue'	Hybrid Speedwell	A-Rest	Less than 100 x 3	Reduce rate or frequency.
	B-Nine	5000 x 2	Apply at 10-14 day intervals.
	B-Nine/Cycocel	5000/1500 x 1
	Bonzi	Much less than 40 x 1	Very sensitive to Bonzi. Test rates below 20 ppm.
	Bonzi	Greater than 30 x 1 (drench)
	Cycocel	750-1500 x 1
	Sumagic	Less than 15 x 1	Very sensitive to Sumagic. Persistent reductions in plant growth continue in the landscape at 15 ppm.
NR = non-responsive at rates listed *Rates given are for spray applications at label recommended volumes unless stated otherwise. Not all uses listed are on the label. Check product label before using. ^zPGRs are not labeled for use on edible herbs. Specify for ornamental use only.

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