Beginner Gardening: I need advice about my yellow trumpet tree (tabebuia), 1 by moonshadow7

moonshadow7 wrote:
I have had this tree for about 3 years, and it was doing fairly well until this past winter. Now, the top part of the center trunk has died and there is new growth below that. These are my questions:

1. I have already cut the dead limbs off the center trunk, but should I also cut off the dead part of the center trunk just above the new growth?

2. Should I trim the new growth to shape the tree better, since it is growing more on one side than the other?

3. What kind of fertilizer should I use on this tree? I have sandy soil which drains well, but does not have a lot of nutrients.

Thanks for any help you can give me.