Green Giant Arborvitae is one of the most popular trees for home landscaping because they are relatively easy to care for and they have a fast growth rate. However, Green Giant Arborvitae are susceptible to a number of pests and diseases. 

These problems can be difficult to control, but there are some things you can do to help prevent or treat them. 

One of the best ways to protect your Green Giant Arborvitae from pests and diseases is to choose a healthy tree from a reputable nursery. Avoid purchasing trees that look sickly or have discolored leaves. 

Once you have selected a healthy tree, it is important to properly care for it. Water the tree regularly and fertilize it according to the manufacturer's instructions. Be sure to remove any dead or dying branches, as these can provide shelter for pests and diseases. 

If you notice any signs of pests or disease, such as yellowing leaves or webbing, contact a certified arborist or tree care specialist for diagnosis and treatment options. With proper care, your Green Giant Arborvitae will be a welcome addition to your landscape for years to come.