Popcorn Cassia plant
How to prune them so they don\'t get out of control. I have two up against my back wall and they re already over the top... can I prune them back to manageable height?
You can prune these back pretty easily. It is best to wait until spring though. This will give it the best chance of fighting off potential infection from trimming. Here is an article for more information: https://www.gardeningknowhow.com/ornamental/trees/cassia/cassia-tree-pruning.htm