How to trim an Emerald Arborvitae
Emerald Arborvitae (Thuja Occidentalis ‘Emerald Green’) doesn’t really need trimmed that often but will need the some maintenance.The best time to trim them is during the growing season when the shrub is actively growing because if you trim Emerald Arborvitae during the winter the tips will die and the shrub wont look good for a couple of months. The main thing they will need is to have one single leader to prevent branches from breaking when snow lays on them. Pull out any secondary trunks and cut them in half with a pair of clippers. It is important to do this at a young age because if you do it to a fully mature Emerald Arborvitae it will leave bare spots where the branch was removed. This is commonly overlooked because at first the shrub will look thicker with more branches but in the long run it is very important for the health of the shrub. Next you will shear the sides of it to make the foliage thicker and to control the size. Shearing is not necessary but will give it a better shape and create a more formal look. Shearing will not need done every year, but will need done about every third year.