Orchid tree is growing a new tree. Should I leave it or cut it off?

Question

I’m worried it is taking away from the main tree growth. It’s about 3 yrs old.

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Answer 1

Since you want to keep a main trunk and are not training it as a shrub, go ahead and cut it off. Here is more:
https://www.gardeningknowhow.com/ornamental/trees/orchid-tree/growing-orchid-trees.htm