Skip to content
Pocket Botanist
Get the app

Cowslip · Primula veris

What are these bugs on my cowslip?

Pests like aphids can quickly drain the energy from your cowslip, especially on new growth. Take a close look at the undersides of the leaves to identify the culprits.

pests on a plant
Photo: Jules Verne Times Two, CC BY-SA 4.0

Check these first

  1. Inspect the undersides of leaves and flower buds.
  2. Look for sticky residue on the foliage.
  3. Check the soil surface for adult beetles.

Likely causes

  1. Aphids

    Most likely

    How to tell: You will see tiny green or black insects clustering on flower buds and new leaves.

    What to do: Gently wash the aphids off with a steady stream of water. For larger infestations, use a mild insecticidal soap spray once a week.

  2. Vine weevil

    Possible

    How to tell: You might see notched edges on the leaves caused by adult beetles feeding at night.

    What to do: Inspect the plant at night with a flashlight to catch the beetles. Remove and destroy any adults you find.

When to worry

A few aphids are manageable, but if they cover the flower buds, they will prevent the plant from blooming properly.

Stopping it coming back

Check your plants regularly and keep them healthy with proper light and water to help them resist attacks.

Not sure which one it is? Photograph your cowslip.

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.

Download on the App StoreGet it on Google Play

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

Questions people ask

Can I use neem oil?
Yes, neem oil is effective, but apply it in the evening to avoid burning the leaves in the sun.
Will aphids kill my cowslip?
They rarely kill a healthy plant, but they will stunt growth and ruin the flowers if left unchecked.

More problems with Cowslip

Back to the Cowslip guide

This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.