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Black Mondo Grass · Ophiopogon planiscapus 'Nigrescens'

Why are there holes in my Black Mondo Grass leaves?

If you see ragged edges or holes in your foliage, you likely have slugs or snails visiting. These pests love the damp, dark environment this grass provides.

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

Check these first

  1. Look for slime trails on the leaves.
  2. Check the base of the plant at night with a flashlight.
  3. Inspect the soil around the clump for hiding pests.

Likely causes

  1. Slugs and snails

    Most likely

    How to tell: Irregular holes in leaves and shiny slime trails left on the soil or foliage.

    What to do: Handpick the pests in the evening when they are active. You can also place shallow dishes of beer near the base to trap them.

  2. Overcrowding

    Possible

    How to tell: Dense clumps that stay wet for too long, creating a perfect habitat for pests.

    What to do: Divide your plant clumps to improve air circulation. This makes the area less inviting for slugs and snails.

Pests on other plants

Find out what's wrong with your black mondo 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

If the damage is extensive and the plant is losing significant foliage, take action immediately. Small amounts of damage are usually manageable.

Stopping it coming back

Keep the area around your plants clear of debris and leaf litter where pests like to hide.

Black Mondo Grass: pests? Check yours with a photo

Every plant is a little different. Take a photo of your black mondo 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 dangerous to the plant?
They can be if they eat enough foliage to weaken the plant. Keep an eye on the damage levels.
Can I use pesticides?
Try natural methods like handpicking or beer traps first. If you must use a product, choose one safe for the environment.

Guides to these causes

More problems with Black Mondo Grass

Back to the Black Mondo 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.