Are these bugs harmful?

Yes, aphids suck the sap from your plant, which weakens it and can spread viruses. It is best to treat them as soon as you spot them.

Do I need to use harsh chemicals?

No, you should avoid harsh pesticides. A simple water spray or organic insecticidal soap is usually enough to handle the problem.

What are these bugs on my common purslane?

Check these first

Inspect the undersides of the leaves for tiny insects.
Look for sticky residue on the stems or leaves.
Check for white or yellow bumps on the foliage.

Likely causes

Aphid infestation
Most likely
How to tell: You will see clusters of tiny green or black insects on the undersides of leaves or near flower buds. They often leave behind a sticky residue called honeydew.
What to do: Spray the plant with a strong stream of water to knock them off. If they persist, use a mild insecticidal soap or neem oil spray every 5 to 7 days.
White blister rust
Possible
How to tell: You will notice small white or yellowish pustules on the undersides of the leaves. This is a fungal issue that can weaken the plant over time.
What to do: Remove and destroy any infected leaves immediately to stop the spread. Improve air circulation around the plant and avoid getting water on the foliage when you irrigate.

When to worry

A few aphids are usually manageable, but a heavy infestation can stunt growth. If the plant is covered in white pustules, it is likely too far gone and should be removed.

Stopping it coming back

Keep your plant healthy with plenty of sun and avoid overcrowding. Check your plants weekly for early signs of trouble.

Not sure which one it is? Photograph your common purslane.

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.

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Questions people ask

Are these bugs harmful?: Yes, aphids suck the sap from your plant, which weakens it and can spread viruses. It is best to treat them as soon as you spot them.
Do I need to use harsh chemicals?: No, you should avoid harsh pesticides. A simple water spray or organic insecticidal soap is usually enough to handle the problem.