I am in S. TX and my plants are 2 years old. They are -probably- 7 ft. tall and very leggy. A week or so ago the bottom branches started turning brown. Browning kept going till 3/4 of plant died. To me, it looks like a chemical defoliant of some kind. I have removed all brown leaves and plan on cutting off small branches that are clearly dead. They are unsightly but are really making an effort to produce flowers. Can I cut plants clear back? if so, how much should I leave? Also how short can branches that are alive be cut back?
Certified GKH Gardening Expert
You can actually prune back the entire plant in the early spring.
These articles will help you.