Spent 3 years cutting limbs flush to the trunk til a guy in Omaha set me straight
I was doing storm cleanup in Omaha after that big ice storm and cutting every branch flush right against the trunk because I thought it looked cleaner. An older guy named Ray who had been climbing for 30 years watched me for about 10 minutes and finally said "you're basically rolling out a welcome mat for rot." He showed me how the branch collar works and that cut should leave that little swollen ring intact so the tree can seal itself off. I went back through my own yard in Des Moines and found 5 maples I had butchered years ago, all of them with dark decay right at those flush cuts. Now I'm wondering how many of my old clients' trees I set up for problems. Any of you got a trick for explaining the collar cut to homeowners who think flush looks tidier?