How to Plant Your Thuja Green Giant Trees

  1. Dig a hole about 2 inches wider and deeper than rootball of your plant.
  2. Place plant in hole a fill in with soil. Adding potting soil and organic compost or fine mulch may be mixed in to fill the hole.
  3. Sprinkle one tablespoon of lime around the drip line of the tree.
  4. Water until soil is saturated; then gently apply pressure around the tree to firm the soil.
  5. Carefully follow fertilizer instructions below.
  6. Lightly mulch around the tree.

Fertilizing the Thuja Green Giant Tree

Use a slow release fertilizer with the numbers 10-10-10. This is also sold as Azalea Food. If you cannot find 14-7-7, find a slow release fertilizer with less than 19% of Nitrogen and half the amount of phosphates and Soluble Potash.

Fertilize your plants 3 times a year around March 31, June 30, and September 30.

Sprinkle the fertilizer around the drip line of the tree (DO NOT MIX IN SOIL):

2.5″ Potted Tree 1 TEASPOON
1 Gallon Tree 2 TEASPOONS
3 Gallon Tree 3 TEASPOONS

Mature Width (ft): 10
Scientific Name: Thuja (standishii x plicata) ‘Green Giant’
Growth Rate: 2-3 feet per year.
Light Needed: Partial to Full
Recommended Spacing: 5 Feet
Recommended Zone 5, 6, 7, 8, 9