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Peruvian torch cactus · Echinopsis macrogona

Are there bugs on my Peruvian torch cactus?

It is less common for this plant to get pests, but they can occasionally appear if the plant is stressed or kept in poor airflow. Check the crevices between the ribs of the cactus first for signs of white, cottony webs.

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

Check these first

  1. Examine the ribs and crevices closely for white fuzz.
  2. Look for small, hard brown bumps on the skin.
  3. Check the base of the plant where it meets the soil.

Likely causes

  1. Mealybugs

    Most likely

    How to tell: You see small, white, fuzzy patches that look like bits of cotton tucked into the ribs of the cactus.

    What to do: Dab the bugs with a cotton swab dipped in 70 percent isopropyl alcohol to kill them on contact. For larger infestations, spray the entire plant with insecticidal soap.

  2. Scale

    Possible

    How to tell: Small, hard, brown bumps appear on the skin of the cactus that can be scraped off with a fingernail.

    What to do: Scrape the scales off carefully with a dull knife or fingernail. Follow up by wiping the area with a cloth soaked in rubbing alcohol to remove any remaining eggs.

Pests on other plants

Find out what's wrong with your peruvian torch cactus

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

Pests are rarely fatal if caught early, but they can weaken the plant and make it susceptible to infections. You should worry if you see the infestation spreading rapidly across the entire stem.

Stopping it coming back

Keep your cactus in a spot with good air circulation and inspect it every time you water.

Peruvian torch cactus: pests? Check yours with a photo

Every plant is a little different. Take a photo of your peruvian torch cactus 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

Will these pests spread to my other plants?
Yes, mealybugs and scale can easily travel to nearby plants. Isolate your cactus until you are sure the pests are gone.
Can I use neem oil?
Neem oil is effective, but be careful applying it in direct sun as it can burn the skin of the cactus. Apply it in the evening or move the plant to the shade for a day.

Guides to these causes

More problems with Peruvian torch cactus

Back to the Peruvian torch cactus 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.