what i did in similar circs.. was to buy a new tree.. and plant it near, but not close to the old one ... they are not expensive trees ... and they are rather fast growing ...

i then proceeded over the next 8 years.. to watch to older one start dying .. branch by branch.. and then eventually right down the split trunk.. until all that is left is the rotting sawn off stump ...

personally.. i do not believe in the hardware solution to a broken or dying tree .... nor the application of goos nor paints to aid in healing.. everything you dream up is contrary to mother nature.. and in my case.. not worth the cost nor the labor ...

if you like fooling around with this kind of stuff.. all the power to you ... knock yourself out... but think hard about investing $20 in a new tree [mail order in fall at the proper planting time] ... for the future ....

good luck

ken

I'm definitely with Ken on this. It's time to plant a replacement.

I think the glue is more likely to cause problems than to solve any. Any type of sealant applied to tree wounds just adds to the problem.

Either remove the tree, plant a well-branched (with proper crotch angles) replacement, and keep an eye out for future poor crotch angles, OR, do as Ken suggests and plant the replacement nearby to take over once the original tree has to be removed.