Will aphids kill my dogbane?

Usually no, but they can weaken the plant and stunt its growth. It is best to remove them as soon as you spot them.

Yes, neem oil is effective against aphids. Apply it in the evening to avoid burning the leaves in the sun.

Why are there bugs on my spreading dogbane? Causes and fixes

Check these first

Inspect the undersides of the leaves for clusters of tiny insects.
Look for sticky residue on the foliage.
Check for ants patrolling the stems.

Likely causes

Aphid infestation
Most likely
How to tell: You will see small green or black insects clustering on the stems and new leaves. They often leave behind a sticky substance called honeydew.
What to do: Spray the plant with a strong stream of water to knock them off. If they persist, apply insecticidal soap once a week until they are gone.
Ant farming
Possible
How to tell: Ants crawling up and down the stems are a major red flag. They protect aphids to harvest the honeydew they produce.
What to do: Use a sticky barrier around the base of the stem to stop ants from climbing. Once the ants are gone, the aphids are easier to manage.

Pests on other plants

Find out what's wrong with your spreading dogbane

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 normal for this plant, but you should act if you see large colonies covering the stems. If the new growth starts to curl or stunt, the infestation is serious.

Stopping it coming back

Keep the plant healthy with proper light and water to help it resist pests. Check your plant weekly during the growing season to catch bugs early.

Spreading dogbane: pests? Check yours with a photo

Every plant is a little different. Take a photo of your spreading dogbane 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

Will aphids kill my dogbane?: Usually no, but they can weaken the plant and stunt its growth. It is best to remove them as soon as you spot them.
Can I use neem oil?: Yes, neem oil is effective against aphids. Apply it in the evening to avoid burning the leaves in the sun.

Guides to these causes

Aphids

Why are there bugs on my spreading dogbane?