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Bromélia · Bromeliaceae

Why are there white cottony spots on my bromeliad?

You are likely dealing with mealybugs, which love to hide in the tight spaces where leaves meet the center. Check the leaf axils closely for these small, fuzzy white pests.

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

Check these first

  1. Inspect the base of every leaf where it meets the central cup.
  2. Check the undersides of the leaves for small bumps or sticky residue.
  3. Isolate the plant from your other houseplants immediately.

Likely causes

  1. Mealybug infestation

    Most likely

    How to tell: Look for small, white, cottony masses tucked deep into the base of the leaves. You might also see a sticky residue called honeydew on the foliage.

    What to do: Dip a cotton swab in rubbing alcohol and dab it directly onto the pests to kill them on contact. For larger infestations, spray the entire plant with insecticidal soap every 7 days until they are gone.

  2. Scale insects

    Possible

    How to tell: These look like small, hard brown bumps that do not move and are often found on the undersides of leaves. They suck sap and weaken the plant over time.

    What to do: Gently scrape the bumps off with your fingernail or a soft brush. Wipe the leaves down with a mild soapy water solution to remove any remaining larvae.

Pests on other plants

Find out what's wrong with your bromélia

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 the plant starting to wilt or the leaves turning yellow, the infestation is severe and needs urgent treatment.

Stopping it coming back

Keep your plant clean by wiping the leaves with a damp cloth every month and avoid over-fertilizing, which can attract pests.

Bromélia: pests? Check yours with a photo

Every plant is a little different. Take a photo of your bromélia 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

Can I use neem oil on my bromeliad?
Yes, but be careful. Apply it in the evening to avoid leaf burn and do not let it pool in the central cup.
Will these bugs spread to my other plants?
Absolutely. Mealybugs move easily between plants, so keep the affected bromeliad in a separate room until it is completely clear.

Guides to these causes

More problems with Bromélia

Back to the Bromélia 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.