butterfly bush in a pot is dropping yellow leaves.
I know I have a big aphid issue but I also have at least a dozen little Monarch caterpillars feasting on it. So is there anything I can do? I am afraid if the leaves keep dying there won't be enough feed for the babies before cocoon time.
Certified GKH Gardening Expert
This is likely a watering issue; too much or too little.
This article will help you.