I’ve spotted some sort of frothy bubbles on a few of my plants, it looks like “spittle”, is it a problem?
→ Shared by Dominique, France
No doubt, you’re dealing with a spittlebug.
Philaenus spumarius is a parasite, typically harmless, that doesn’t require any treatment with conventional insecticides, even if it’s organic.
Otherwise, let Mother Nature do her thing. If you really need to treat, opt for a biological insect treatment method.