Name: greene Savannah, GA (Sunset 28) (Zone 8b) I have no use for internet bullies!
If the tree is healthy and has enough water and nutrients it should be fine. The mistletoe shows that you have a good population of birds. If you are worried about the tree, give it some extra nutrients and give it water during dry spells.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"
