Your arborvitae should be a brilliant green all year long, so what do you do when it starts to go brown? There are a number of reasons why your evergreen is browning. Drought stress, climate concerns, damage, insects and disease can all contribute to a browning arborvitae. Once the leaves have turned brown, they won’t turn back, so you need to isolate the damage and stop the problem before it ruins the whole tree. Read on to learn how to help yours stay green.
If your leaves are browning in the summertime, there’s a good chance your arborvitae is getting scorched. These trees need moist soil, so supplement low rainfall with deep watering.
When weather fluctuates on the borders of winter and spring, the air temperature can heat up and the soil can be frozen, still. Having leaves in the warm and frozen roots can do a lot of damage to your arborvitae. You can’t control the weather, but you can set your tree up for success. Don’t use high-nitrogen fertilizer late in the season and make sure your arborvitae is planted in well-drained soil.
Broken branches and twigs can cause stress and even tissue death. If you notice brown patches that appear in one area on you evergreen, it’s likely caused by a damaged branch. Just prune away the dead branches so new growth has room to flourish.
If you notice small holes or sawdust particles in the trunk of your arborvitae, boring insects are the likely cause of your brown spots. Talk to your local garden store about the best pesticides to use in your area.
If your tree is rooted in standing water, it can get sick. Root rot disrupts the flow of water and nutrients inside your tree. Check your soil, and if standing water seems to be the problem, adjust the drainage.