Arborvitaes turning orange in areas

Asked July 10, 2019, 9:19 AM EDT

These Arborvitaes were planted about 3-4 years ago. I noticed in some spots the needles are turning orange. They fall off if I touch them. Is there an issue?

Macomb County Michigan

1 Response

This appears to be Arborvitae Tip Blight caused by the fungal pathogen Pestalotiopsis funerea. Cutting out infected needles will help. Be sure to disinfect tools between cuts so not spread infection (alcohol works). Check out the following links for more information:
https://ag.umass.edu/landscape/fact-sheets/arborvitae-needle-blight
https://extension.psu.edu/arborvitae-diseases
http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/needlecasts/pestalotiopsis-tip.aspx
I hope this helps,