I have a plant that I call the helicopter plant. I have had it for several years and it now has these black things all over it. And it is killing my plant. These black things are the size of pencil erasers. I can pick them off. How do I treat this plant?
Certified GKH Gardening Expert
This could be a few different pests. But the best way to deal with them would be to spray down the plant with the hose and then treat it with an insecticide. I personally like neem oil. It is organic and safe for pets and people. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm