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Cider gum · Eucalyptus gunnii

Are there bugs on my Eucalyptus gunnii?

It is less common for this plant to have pest issues, as it is generally quite hardy, but scale insects or aphids can occasionally appear. Check the undersides of the leaves and along the stems for small bumps or sticky residue.

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

Check these first

  1. Examine the undersides of leaves for tiny insects.
  2. Look for sticky residue on the leaves or nearby surfaces.
  3. Check the stems for small, hard bumps.

Likely causes

  1. Scale insects

    Most likely

    How to tell: You will see small, brown, bump like structures on the stems or leaf veins. They often look like part of the plant but can be scraped off with a fingernail.

    What to do: Dab the insects with a cotton swab dipped in rubbing alcohol. For larger infestations, spray the plant with neem oil every 7 days until they are gone.

  2. Aphids

    Possible

    How to tell: These tiny green or black insects cluster on new, tender growth. You might notice the leaves curling or a sticky substance called honeydew on the foliage.

    What to do: Wash the plant gently with a strong stream of water to knock the bugs off. If they persist, apply an insecticidal soap once a week for 3 weeks.

Pests on other plants

Find out what's wrong with your cider gum

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.

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When to worry

A single bug is usually not a crisis, but you should act immediately if you see a large colony or if the plant starts showing signs of stunted growth. It is normal to see an occasional stray insect outdoors.

Stopping it coming back

Keep your plant healthy with proper light and water, and inspect the foliage every time you water to catch any pests early.

Cider gum: pests? Check yours with a photo

Every plant is a little different. Take a photo of your cider gum 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.

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Questions people ask

Do I need to use harsh chemicals?
No, you should avoid harsh pesticides. Simple methods like rubbing alcohol or insecticidal soap are usually enough to handle these pests.
Will these bugs kill my tree?
If left untreated for a long time, a heavy infestation can weaken the tree significantly. Early detection is the best way to ensure your plant stays strong.

Guides to these causes

More problems with Cider gum

Back to the Cider gum guide

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