I can't really see the wound well enough to tell much. Any chance of a pic focused on the tree instead of the grass? And how about a hint as to where you are.

tj

Ill have to take one tomo. Im in zone 6b. Heres another but not much better.

It does not look like it is detached but it could have been some kind of rodent crawling around on it.

Could be from a late freeze. When the sap starts to run, then you get a hard freeze, the sap freezes and expands and has no where to go, so it splits the limb/trunk.

It's like putting a beer bottle in the freezer and forgetting about it. The expanding ice gently breaks the bottle open to relieve the pressure.

Thank you mblan13. Thats what a nursery told me it was also..thanks for the help!!