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Sweet box · Sarcococca confusa

How do I get rid of scale insects on my Sweet box?

Scale insects are small, sap sucking pests that look like tiny bumps on the stems and leaves of your Sweet box. Check the stems closely, as these pests are masters of disguise.

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

Check these first

  1. Look for tiny, immobile bumps on the stems.
  2. Check for a sticky residue on the leaves known as honeydew.
  3. Inspect nearby plants to see if the pests have spread.

Likely causes

  1. Scale Infestation

    Most likely

    How to tell: You will see small, brown or tan bumps on the stems that do not move. If you scrape them, they come off, revealing a soft center.

    What to do: For light infestations, gently scrape the scales off with a soft brush or your fingernail. For larger issues, spray the plant with horticultural oil or neem oil every 7 to 10 days until they are gone.

  2. Stressed Plant

    Possible

    How to tell: The plant is struggling due to drought or poor soil, making it more susceptible to pests. You might see ants crawling on the plant, which often farm scale for their honeydew.

    What to do: Improve the plant's health by watering consistently and adding a layer of mulch. Once the plant is stronger, it will be better at resisting future pest attacks.

Pests on other plants

Find out what's wrong with your sweet box

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

Scale is serious if it covers the entire plant and causes the leaves to yellow or drop. If the plant is heavily infested and losing vigor, take action immediately.

Stopping it coming back

Keep your Sweet box healthy with proper water and shade. Regularly inspect the stems during your routine garden walks.

Sweet box: pests? Check yours with a photo

Every plant is a little different. Take a photo of your sweet box 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

Are these bumps part of the plant?
No, they are pests. If you can scrape them off, they are definitely scale insects.
Do I need to use harsh chemicals?
No, horticultural oil is very effective and much safer for your garden. It works by smothering the insects.

Guides to these causes

More problems with Sweet box

Back to the Sweet box 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.