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Timothy grass · Phleum pratense

What are these pests on my Timothy grass?

It is less common for Timothy grass to have pests, but aphids or mites can occasionally appear in dry conditions. Check the undersides of the leaves first for tiny insects or webbing.

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

Check these first

  1. Inspect the undersides of the leaves with a magnifying glass.
  2. Look for sticky residue or fine webbing on the foliage.
  3. Isolate the plant from others to prevent spreading.

Likely causes

  1. Aphids

    Most likely

    How to tell: You see small, soft bodied insects clustered on the stems or undersides of leaves. They often leave behind a sticky residue called honeydew.

    What to do: Spray the leaves with a gentle stream of water to knock the insects off. If they persist, apply insecticidal soap once a week for 3 weeks.

  2. Spider Mites

    Possible

    How to tell: Fine webbing appears between the grass blades and the leaves look stippled or discolored. These pests thrive in hot, dry environments.

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

Pests on other plants

Find out what's wrong with your timothy grass

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

Small numbers of pests are manageable, but if you see heavy webbing or significant leaf damage, treat the plant immediately. A few stray bugs are usually just a minor nuisance.

Stopping it coming back

Keep the plant healthy with proper light and water, and wipe the leaves down occasionally to remove dust.

Timothy grass: pests? Check yours with a photo

Every plant is a little different. Take a photo of your timothy grass 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

Are these pests harmful to pets?
Most common houseplant pests are not harmful to pets, but the treatments you use might be. Always check the label of any spray you use.
Can I use dish soap to kill them?
You can use a very mild solution of water and a few drops of unscented dish soap. Rinse the leaves thoroughly after application to prevent burning.

Guides to these causes

More problems with Timothy grass

Back to the Timothy grass 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.