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. Dec 10, Active growth begins in spring and continues until dormancy in fall. Like most evergreens, arborvitae should be trimmed while it is dormant.
This is. 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. For instance, some varieties of Azaleas only bloom once and the best time to prune them would be as soon as possible after they bloom. Ideally, there is only a six-week window of when pruning is appropriate. But some of the newer varieties bloom twice and can be pruned twice (also soon after blooming). Hydrangea shrubs also have variations. Jul 06, The Best Time of Year to Trim Arborvitae Trees. Arborvitaes (Platycladus orientalis, Thuja occidentalis) are coniferous shrubs and trees with yellowish green, needlelike foliage.
The tree foliage is soft and feathery when young and grows more scalelike with age. Arborvitaes are best pruned and trimmed during late spring, if at all.