Dec 10, Late fall -- about December -- is another excellent time to think about trimming emerald green arborvitae or other kinds of arborvitae. Trim in late fall, when there is little or no chance of a. Aug 16, Gaétan Paquet, an ecological arborist with 30 years’ experience pruning arborvitae hedges, recommends late summer pruning, from August 15 th to 30 th.
By pruning at this time, at the tail end of the hedge’s growing season, the hedge will retain a dense, very conical shape through the winter that will prevent the snow from clinging to the twigs and prevent any snow buildup, as even.
Late spring after flowering - After the arborvitae has flowered and before mid summer is the best time to prune back a tall hedge row. The plant can maintain itself after. Apr 01, Arborvitae are evergreens that do well with enough pruning to help them maintain their natural shape.
If you want to help these natural beauties become their best selves, time your pruning well, doing the heaviest pruning in early spring. However, you should also prune any time of year when you come across dead, diseased, or damaged branches%(40).
Pruning can also help you better prepare your landscape for the coming winter. Certain foundation plants such as Arborvitae or Hollies can grow rapidly in the summer and then be unwieldy come fall.
These are best pruned prior to the first snowfall.