my mimosa tree is 3 yrs old the trunk split what can i do
Is the actual trunk itself split, or is it the bark that is split open, but the trunk (wood) remains intact? In either case, once the damage is done, there's little that can be done. If it is a split in the bark, you can remove any loose bark to prevent moisture from accumulating behind the bark. If the loose bark extends more than 1/3 of the way around the tree, it's likely to be permantly stunted. Because the tree is quite young, if the wood itself is split, it might be best this winter to cut the tree back to below the split. Next spring it should send out strong new shoots from just below the cut that you make. Select the strongest to become the new leader. If the root system is well established, it should quickly grow back to the size it is now.
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