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Purple Shamrock · Oxalis triangularis

Why does my Oxalis triangularis have pests?

Spider mites are the most common pests for the purple shamrock, especially in dry indoor air. Check the undersides of the leaves for tiny webs or speckling.

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

Check these first

  1. Examine the undersides of the leaves for webbing.
  2. Look for tiny moving dots on the foliage.
  3. Check if the leaves look dusty or speckled.

Likely causes

  1. Spider Mites

    Most likely

    How to tell: You will see fine, silky webbing between the stems and tiny white or red dots moving on the leaves.

    What to do: Wipe the leaves down with a damp cloth to remove the mites. Spray the plant with insecticidal soap or neem oil every 5 to 7 days until they are gone.

Find out what's wrong with your purple shamrock

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

If you see heavy webbing and the leaves are curling or dropping, the infestation is severe. Act quickly to prevent the mites from spreading to other plants.

Stopping it coming back

Keep the humidity around your plant slightly higher and wipe the leaves occasionally to keep them clean.

Keep your purple shamrock healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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Questions people ask

Can I just wash the mites off?
A gentle shower can help reduce their numbers significantly. However, you should follow up with neem oil to catch any remaining eggs.
Will these pests hurt my other plants?
Yes, spider mites spread easily to nearby plants. Isolate your shamrock until you are sure the infestation is cleared.

More problems with Purple Shamrock

Back to the Purple Shamrock 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.