How to treat disease on Orchid
Hello, Some of my orchidé are showing some kind of white marks on its leaves. It feels like glue and it is all over the leaves. How do I treat it? How do I stop the other orchidé from getting the same thing. thanks Selly
Certified GKH Gardening Expert
This appears to be Mealy Bug.
Probably the most popular home remedy against this group of pests is to swab and daub plants with a cotton swab or ball of cotton dipped in isopropyl (rubbing) alcohol. The common 70% isopropyl alcohol available is satisfactory. First remove all the visible insects, large and small. Then treat the affected area with alcohol. With Scale insects and mealybugs you will still need to repeat the alcohol treatment to remove the tiny yellowish spots which are the recently hatched crawlers. Pay particular attention to the folds, crotches, branch bases, midrib areas, and roots.