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

Figure 1. Application volume affects plant response to soil-active PGRs like Bonzi: hollyhock (Alcea rosea) treated with 50 ppm Bonzi: untreated control (left), at label recommended volume of 2 qt. per 100 sq. ft. (center) or at twice the label recommended volume (4 qt. per 100 sq. ft.).

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