 Even though I can't see any fungus growing on the actual trees, they've been dropping large limbs. If there's like a storm or something, it'll bring them down. And I've noticed that like the limbs are spongy, like they're rotted. But the whole tree looks healthy aside from these limbs that are falling. But I'm worried about the size of the limbs because I wonder if something's going on with the health of the tree and what I can possibly do to help them.