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Eastern gladiolus · Gladiolus communis

Why are there tiny bugs on my Eastern gladiolus?

If you see tiny, slender insects on your plant, you are likely dealing with thrips. These pests suck sap from the leaves and flowers, often leaving behind silvery streaks or stunted growth.

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

Check these first

  1. Inspect the undersides of the leaves for tiny moving insects.
  2. Check the flower buds for silvery streaks or distorted petals.
  3. Look for sticky residue on the leaves.

Likely causes

  1. Thrips infestation

    Most likely

    How to tell: Look for tiny, straw colored insects and silvery, streaky damage on the foliage or petals.

    What to do: Spray the entire plant with insecticidal soap or neem oil every 5 to 7 days. Make sure to coat the undersides of the leaves where these bugs like to hide.

  2. Aphids

    Possible

    How to tell: You will see clusters of small, soft bodied insects on the new growth or flower buds.

    What to do: Blast the plant with a strong stream of water from your hose to knock them off. If they persist, apply a gentle insecticidal soap once a week.

When to worry

Worry if the flowers are failing to open or if the leaves look severely distorted. A few bugs are manageable, but a heavy infestation can kill the plant.

Stopping it coming back

Keep the area around your gladiolus free of weeds, which often harbor these pests. Regularly inspect your plants during the growing season.

Not sure which one it is? Photograph your eastern gladiolus.

This page lists the usual causes. Pocket Botanist looks at your actual leaf 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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Questions people ask

Can I just wash the bugs off?
Yes, a strong spray of water helps, but you must repeat it every few days to catch the new ones that hatch.
Will these bugs kill my gladiolus?
They can weaken the plant and ruin the blooms, but they rarely kill a healthy, established bulb.

More problems with Eastern gladiolus

Back to the Eastern gladiolus 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.