Planted a red bud tree in spring and had a cold wind that killed off the top of the tree but it is growing from the bottom like a bush. How do I get the right growth for the tree to grow and get rid of the rest?
It's possible that your Redbud tree is a grafted specimen. Do you see a bulge or graft on the lower trunk of the tree?
If the growth is coming from below this graft line, the actual tree has died off and your tree is growing from the root stock.
What type of tree that is actually growing is not known.
Pruning of a Redbud should take place in late spring, after blooming and before the tree sets new buds.
In your case, the flowering is not a concern at this point.
You can wait until the tree is dormant and try pruning to some shape that may be desirable.
In most cases a reputable garden center or greenhouse will guarantee and replace a tree that has died within 1 year of purchase.