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Arborvitea yellowing #946829

Asked October 09, 2026, 2:36 PM EDT

We planted several arborvitea this spring and have noticed quite a bit of yellowing/orange of new growth on the interior. One of the trees is in a low area that I believe is too wet and is showing yellowing. Is this due to transplant shock, over/under watering, or something else? Should we remove the yellow/orange growth. Is there anythign we should do over the winter or to correct this? Overall the trees look healthy, other than this development.

Black Hawk County Iowa

Expert Response

Good afternoon, Joel,

Thank you for the question. I would suggest connecting with your local horticulture specialist in the Black Hawk County Extension Office, Steven Eilers, and he will be able to assist you: https://www.extension.iastate.edu/blackhawk/staff/seilers
Answer Line answer@iastate.edu Iowa 800-262-3804 and Minnesota 800-854-1678 Replied October 09, 2026, 2:42 PM EDT

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