04/16/2026
682-204-4746
https://www.arboristusa.com/diplodia-tip-blight-junipers-little-elm-texas/
Hello Community, this is Henry Friar, ISA Certified Arborist with Arborist USA.
We’re seeing a widespread issue across Little Elm, Texas right now with junipers and red mountain cedars showing yellowing, browning, and tip dieback. After evaluation, this is consistent with Diplodia tip blight and twig canker, often combined with spider mite pressure.
This is not just a cosmetic issue. Diplodia is a fungal pathogen that attacks the vascular system of the tree, while spider mites reduce the tree’s ability to photosynthesize. When both are present, the tree is losing energy production and internal transport at the same time, which accelerates decline.
The key to managing this is early intervention. Once the canopy is heavily affected, there is no true cure. However, if caught early, we can slow progression by removing necrotic tissue, applying antifungal treatments, controlling pest pressure through an IPM program, and rebuilding tree vigor with micronutrients.
If you’re noticing your evergreens thinning out or turning brown, don’t wait—this condition spreads quickly once established.