Why Are My Thuja Turning Yellow

The arborvitae plants often need a lot of water and can turn yellow if too little or too much water is given to them. If they are watered too frequently, and the soil is saturated, then that can cause waterlogging. Waterlogging can then lead to loss of roots as well.

How do you revive yellow arborvitae trees?

Watering established plants slowly and deeply every 10 days to two weeks, and recently planted ones every week to 10 days, as well as mulching around them with a 3- to 4-inch layer of organic mulch such as wood bark, help arborvitaes combat leaf scorch by reducing heat and wind stress.

How do I know if my arborvitae is overwatered?

Symptoms of overwatering your Arborvitae can be similar to those of underwatering. You may see this change to yellow or brown colors in the branches and needle drop. Too much moisture or insufficient drainage can also lead to root rot.