Emerald Green Arborvitae Planting Guide

The Emerald Green Arborvitae is a good plant to make a fence line for privacy, but it's a thirsty addition to your landscape. You'll need to water this plant every other day during the first year with at least an inch of water. The deeper you water, the better for the plant. After the roots become established, you can water once a week with at least an inch of water. These trees grow best in the Pacific Northwest, but are hardy in zones 2 through 8. This evergreen blooms red and bronze in the late winter and early spring.

High Fencing
The Emerald Green Arborvitae is in the Cupressaceae family. The genus is Thuja and the species is occidentalis. The cultivar is Emerald Green. Emerald Green can grow to a height of more than 40 feet, so this isn't a compact privacy hedge; rather, it's ideal for a windbreak or a defining element along an edge of your landscape.

Emerald Green arborvitates should be spaced from 8 to 10 feet apart. If you do not prune them and want a taller tree, they can be planted as close as two feet apart. The trees should be planted in full sun, which is at least six hours of continuous sunlight every day.

Soil and Pruning
Plant Emerald Green Arborvitae in soil with a pH of 6.5 to 7.5. During the first year of planting, Emerald Green Arborvitae is busy establishing its roots, so you will not see a lot of top growth. It is also a slow-grower and will only add 9 inches of height and about 6 inches in width each year.

If you want a tall, thin hedge, do not prune the Emerald Green Arborvitae. If you want a more rounded tree, prune the top of the plant. It will take longer for it to get taller, but it will bush out better. If you let the tree grow without pruning, it will take years to fill in. Throughout the year, but especially during the spring, clean out dead branches. The dead branches should pull off easily with your hands.

Watch for spider mites, which love Emerald Green Arborvitae. Spider mites are most prevalent in the Pacific Northwest. Though they will bother any trees, sick trees and trees that do not get enough water are especially susceptible to spider mites.

Spider mites devour the foliage, leaving telltale spots on the leaves. They may also cover leaves in a thin webbing. If possible, isolate the plant to contain spider mites and use insecticide to get rid of them as soon as they appear. These insects will develop resistance to insectices, so you may need to rotate the products that you use.

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