Pocket Botanist
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Check these first
- Look closely at the stems for small bumps.
- Check for sticky residue on the needles.
- Inspect the undersides of the foliage.
Likely causes
Scale Insects
Most likelyHow to tell: You notice small, raised bumps on the stems or needles that look like tiny shells. The foliage may also look stunted or yellow.
What to do: Scrub the stems gently with a soft brush and soapy water. For heavy infestations, apply a horticultural oil spray according to the label instructions.
Aphids
PossibleHow to tell: You see tiny, soft bodied insects clustered on new growth. 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, use an insecticidal soap spray.
When to worry
Worry if the infestation is covering most of the stems or if the plant is losing significant amounts of foliage. A few insects are usually manageable.
Stopping it coming back
Keep your yew healthy with proper watering and light to help it naturally resist pest attacks.
Not sure which one it is? Photograph your english yew.
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.
Questions people ask
- Are these pests harmful to me?
- No, scale insects and aphids on yews are not harmful to humans or pets. However, they can damage the health of your plant.
- How often should I treat for pests?
- Treat as needed when you see the insects. Avoid routine spraying unless you have a known, recurring problem.
More problems with English yew
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.