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Bristly oxtongue · Helminthotheca echioides

Why are there bugs on my bristly oxtongue?

It is less common for this plant to have pest issues, but aphids or spider mites can sometimes appear if the plant is stressed. Check the undersides of the leaves and the stems for tiny insects or webbing.

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

Check these first

  1. Inspect the undersides of leaves for tiny moving specks.
  2. Look for sticky residue on the stems.
  3. Check for fine webbing between the leaves.

Likely causes

  1. Aphids

    Most likely

    How to tell: You will see clusters of tiny green or black insects on the new growth or flower buds. 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, apply insecticidal soap once every 5 days for 2 weeks.

  2. Spider Mites

    Possible

    How to tell: Look for fine, silk-like webbing between the leaves and tiny yellow stippling on the foliage. These pests thrive in hot and dry conditions.

    What to do: Increase the humidity around the plant by misting it occasionally. Wipe the leaves down with a damp cloth and use neem oil if the infestation is heavy.

Find out what's wrong with your bristly oxtongue

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

You should worry if the leaves start to yellow or deform significantly. A few stray bugs are normal for outdoor plants, but a full colony needs immediate treatment.

Stopping it coming back

Keep your plant healthy with consistent watering and ensure it has good airflow to discourage pests from settling in.

Keep your bristly oxtongue 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 use dish soap to kill the bugs?
You can, but make sure it is a mild, non-degreasing soap. Mix one teaspoon of soap per quart of water and test a small leaf first to ensure it does not burn.
Will these bugs spread to my other plants?
Yes, aphids and spider mites can easily travel to nearby plants. Isolate your bristly oxtongue until the pests are completely gone.

More problems with Bristly oxtongue

Back to the Bristly oxtongue 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.