Norfolk Island pine, House pine

(Araucaria heterophylla)

Contact: Diane Relf, Extension Specialist, Environmental Horticulture

August 1996

DESCRIPTION:

Resembles a true pine tree. Branches are horizontal to main stem, in tiers of bright green, with soft, awl-shaped needles.

FOLIAGE COLORS:

Green

CONTAINER:

Large container.

LIGHT:

Medium. East or west window, about one thousand footcandles.

WATER:

Frequent. Water thoroughly, keep soil evenly moist to touch (not saturated). Don't let sit in water.

TEMPERATURE:

Cool - medium. 50 - 70 (degrees F) days, 45 - 65 nights.

HUMIDITY:

Prefers high, 50% or more, good ventilation. Tolerates average

FERTILIZER:

Fertilize every 3 - 4 months.

SOIL MIX:

1 part sterilized garden loam, 1 part clean coarse sand or Perlite, and 1/2 to 1 part sphagnum peat moss.

PROPOGATION:

Seeds or shoot tips

SELECTION GUIDE:

Select sturdy, shapely, healthy plant free from insect and disease damage. New leaf growth is desirable. Avoid those with yellow or brown leaf margins, wilted or water soaked leaves.

CARE:

Challenging. Difficult to grow under average home conditions. Hobby plant requiring knowledge and experience.

PROBLEMS:

Root rot: Provide adequate drainage. Do not let plant sit in water.
Spider mites: Wash with soapy water and apply miticide.
Leaf scorch: Provide adequate water and humidity. Do not overfertilize.
Leaf drop: Avoid conditions that are too dry or too wet.

COMMENTS:

Does not replace damaged top growth, so may easily become mishapened. Often used as an indoor living Christmas tree.

This material was developed by Carol Ness as part of the Interactive Design and Development Project funded by the Kellogg Foundation. Mary Miller, Project Director. Diane Relf, Content Specialist, Horticulture. Copyright 1989 by VCE.

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