treatment

We inherited an old mature maple in our backyard. Canopy looks decent for how old it is, but recently we have noticed a pile of grass falling onto our sidewalk path. The other day we found a borer larvae of some kind but not sure what is is - anyone able to tell me? They all look so similar to...

Two related questions: An arborist told me that Texas A&M (Dr. Appel?) now says injecting propiconazole to prevent oak wilt can be done only twice, a couple of years apart, in a tree's lifetime. I can't confirm that online. Any opinions, facts? 2) I wonder if Mauget's Tebuject (tebuconazole)...