Find Your Ask the Expert: what are stem galls?
I have tiny “cobwebs” at the stem end of my croton and I notice no new leaf growth and many leaves falling off. Could these be stem galls? Or what else could these cobwebs be and how do I get rid of them and ensure they don’t come back? Madelon
Plant Expert Reply:
Stem gall is an abnormal growth on the stem of a plant. It can be cause by various parasites: fungus, bacteria, insects, mites.
However, you probably have cottony scale. It is an insect. You will need an insecticide for houseplants. Your local garden center should carry one.
This plant problem question was brought to you by Duluth MN Florists
Thank you so much for your help–I’ve not seen the term “cottony scale” before when I looked up about diseases of the croton. I will get some insecticide for my beautiful plant.