Common Tree Diseases in Central Texas: Identification & Care
Beyond oak wilt, Central Texas trees deal with a handful of other recurring issues — most of which trace back to one root cause: stress. Two of the most common are hypoxylon canker and ball moss, and understanding the difference matters for how (or whether) to react.
Hypoxylon canker is a fungus that, according to Texas A&M Forest Service and AgriLife Extension research, mainly takes hold in trees that are already weakened — by drought, soil compaction, root damage, or construction-related stress — rather than attacking healthy trees outright. Warning signs include branch dieback and bark sloughing off to reveal a grayish-black fungal mat underneath. There's no chemical cure; management comes down to maintaining overall tree vigor and removing severely affected limbs or trees once the damage is advanced.
Ball moss, on the other hand, looks alarming but isn't actually harmful on its own. Texas A&M AgriLife Extension classifies it as an epiphyte, not a parasite — it grows on bark and branches without feeding off the tree itself. The catch is that heavy buildup can add weight and trap moisture in a dense canopy, which is more of a maintenance issue than a health threat.
Both of these issues tend to show up more after Texas drought years, which is why supplemental watering during dry stretches is one of the simplest things a homeowner can do for long-term tree health. When it's time to act — pruning deadwood, removing a heavily compromised limb or tree, or clearing excess ball moss buildup — that's exactly the field work Douglas Tree Service ATX handles. For a tricky call on whether a tree is salvageable, we recommend an ISA Certified Arborist evaluation first.
Texas Tree Authority Hub
Official Texas resources we trust.