Can I just wash the aphids off?

Yes, a firm spray of water is often enough to control a light infestation. Do this in the morning so the foliage dries quickly.

Will aphids kill my marigold?

They can weaken the plant and ruin the blooms, but they rarely kill a healthy, established pot marigold on their own.

Why are there bugs on my pot marigold? Causes and fixes

Check these first

Inspect the undersides of leaves and flower buds for small clusters of insects.
Check for sticky residue on the leaves.
Look for ants, which often farm aphids.

Likely causes

Aphid infestation
Most likely
How to tell: You will see small green or black insects gathered on the stems and flower buds. 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 or neem oil every 5 to 7 days until they are gone.
Poor air circulation
Possible
How to tell: Plants crowded too close together are more prone to attracting pests. This environment makes it easier for aphids to spread between plants.
What to do: Space your marigolds at least 10 to 12 inches apart. Ensure they are in a spot with good natural airflow to keep the foliage dry.

Pests on other plants

Find out what's wrong with your pot marigold

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 the buds are covered and the plant looks stunted, you must act quickly to save the flowers.

Stopping it coming back

Keep your plants healthy with consistent water and full sun, and avoid over fertilizing with nitrogen which creates soft growth that attracts aphids.

Pot Marigold: pests? Check yours with a photo

Every plant is a little different. Take a photo of your pot marigold 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

Can I just wash the aphids off?: Yes, a firm spray of water is often enough to control a light infestation. Do this in the morning so the foliage dries quickly.
Will aphids kill my marigold?: They can weaken the plant and ruin the blooms, but they rarely kill a healthy, established pot marigold on their own.

Guides to these causes

Aphids

Why are there bugs on my pot marigold?

Check these first

Not sure what's wrong with your pot marigold?