need help with my sycamore tree
Need help with my sycamore tree. It has a hollow spot in the trunk from the ground to about 12 inches high. I don't know if I need to treat it or leave it alone or even fill it with dirt or real good soil. Please help me, as I don't want it to die. It has been there a very long time and is taller than my house.
This article should answer your question: https://www.gardeningknowhow.com/ornamental/trees/tgen/patching-tree-hole.htm
You might want to have a certified arborist check your tree. You can contact your local Extension Service to help you find one. This link will help you locate the E.S. https://www.gardeningknowhow.com/extension-search/