What are the small black bugs on my nasturtiums?
A small black bug has taken over my nasturtiums! I’ve never seen an infestation likes this before on any of my plants. What are they and how do I manage them?
Those insects are aphids. Often aphids are not very problematic, but sometimes they can be severe enough to affect the plant. A strong stream of water can dislodge them and is a good first line of management. Insecticidal soap can also be very effective. More details can be found in the UMaine Extension Pest Management Fact Sheet #5039, Sucking Insects That Affect Vegetable Plants.