Hole in Foxtail palm trunk
One of my Foxtail palms has about a two inch hole in the trunk about a foot above the base. It's not just a depression, it's a hole. I don't know what caused it and am not sure how long it's been there. The palm is about 15 feet tall and appears to be healthy, otherwise.
Is there anything that can be used to fill the hole, silicone caulk maybe, to prevent disease from getting in there or is the tree's fate already sealed?