They can weaken the plant by sucking sap and may spread viruses. It is best to remove them when you see them.

Yes, neem oil is effective, but apply it in the evening to avoid burning the leaves in the sun.

Why are there bugs on my wood speedwell? Causes and fixes

Check these first

Look closely at the tips of new stems.
Check the undersides of the leaves for small clusters of insects.
Look for sticky residue on the leaves.

Likely causes

Aphid Infestation
Most likely
How to tell: You see small clusters of green or black insects on the stems and undersides of leaves.
What to do: Spray the aphids off with a strong stream of water from your hose. For larger groups, use a gentle insecticidal soap spray once a week until they are gone.

Find out what's wrong with your wood speedwell

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

When to worry

A few aphids are manageable, but if they cover the entire plant, it can stunt growth. Treat them as soon as you spot them to prevent a full takeover.

Stopping it coming back

Keep your plant healthy with proper water and light, as stressed plants are more attractive to pests.

Wood speedwell: pests? Check yours with a photo

Every plant is a little different. Take a photo of your wood speedwell and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

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

Questions people ask

Are aphids harmful?: They can weaken the plant by sucking sap and may spread viruses. It is best to remove them when you see them.
Can I use neem oil?: Yes, neem oil is effective, but apply it in the evening to avoid burning the leaves in the sun.

Guides to these causes

Aphids

Why are there bugs on my wood speedwell?