How Long Will It Take For 5-6' Privacy Trees to Grow Together When Planted In a Row?
If trees are planted 5 feet apart, the trees will be grown together when they reach a 5 feet diameter.
If they receive daily watering in the growing season and fertilizer several times a year, most Arborvitae and Cypress should grow around 3-4’ a year. Apart from inorganic fertilizers such as 10-10-10, they also respond well to organic compost.
First year the total height may come to 2-3’ as the first 3 months are spent establishing roots.
The second year height should come to around 5-6’ and about 2’ width.
By year four the trees should be reaching near 5’ width, especially if they had been sheared in late Winter.
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The difference by variety:
-  American Pillar Arborvitae will be tall, but skinny, and should be planted 4’ apart to lock together by year 4.
- Green Giant Arborvitae should lock together at age 4 when planted 5 feet apart.
- Leyland Cypress and Murray Cypress will start locking together at 3 years of age.
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