How should indian bean trees be pruned?

Question

I normally prune growth back to main branch/trunk. New branches have grown up to 6ft this year. Should i cut new growth back as normal or can i keep certain length of new growth. I would like trees to have a better head shape rather than just lots of long branches.
Thank you.

Answer 1

You are on the right track with your thinking of allowing a more natural form and beauty by only reducing the height and spread by a minimum amount. You should thin the canopy first, by taking about one quarter to one third of the shoots to get some spacing between them and open it up. Then you will have fewer shoots to shape back by 1/4 to 1/3 of the length.

https://www.gardeningknowhow.com/ornamental/trees/catalpa/catalpa-tree-planting.htm