Can I use dish soap to kill them?

You can use a very mild, non-detergent soap mixed with water, but commercial insecticidal soap is safer for the plant. Avoid using harsh degreasing soaps.

Will these bugs kill my plant?

It is unlikely to kill a mature plant, but it will stunt growth and prevent flowering. It is best to address the issue quickly.

What are these bugs on my bougainvillea?

Check these first

Inspect the undersides of new leaves.
Look for sticky residue on the foliage.
Check for ants, which often farm aphids.

Likely causes

Aphid Infestation
Most likely
How to tell: You see tiny green or black insects clustered on the tips of new shoots. They often leave behind a sticky substance called honeydew.
What to do: Spray the affected areas with a strong stream of water to knock them off. If they persist, apply insecticidal soap or neem oil once a week until they are gone.

When to worry

A few aphids are manageable, but a heavy infestation can weaken the plant and lead to sooty mold. Treat them as soon as you spot the first cluster.

Stopping it coming back

Keep the plant healthy with proper light and water, as stressed plants are more attractive to pests. Regularly inspect new growth during the spring.

Not sure which one it is? Photograph your bougainvillea.

This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

Get the app · Or check it from a photo now, free

Questions people ask

Can I use dish soap to kill them?: You can use a very mild, non-detergent soap mixed with water, but commercial insecticidal soap is safer for the plant. Avoid using harsh degreasing soaps.
Will these bugs kill my plant?: It is unlikely to kill a mature plant, but it will stunt growth and prevent flowering. It is best to address the issue quickly.