Q.I have a 10 year old Catalpa tree on my property. Plenty of light and water yet no flowers.
I prune it to about 20 feet .

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on July 13, 2020
Considering the tree normally gets 40 to 70 feet, I suspect the lack of blooms is due to excessive pruning.
Once mature, the tree only needs suckers removed or low growing branches that impede walkways.
https://www.gardeningknowhow.com/ornamental/trees/catalpa/catalpa-tree-planting.htm
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