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Quackgrass · Elymus repens

Why are my Quackgrass leaves curling?

It is less common for Quackgrass to show curling leaves, as it is quite drought tolerant. Check the soil moisture first to see if the plant is actually dehydrated despite its toughness.

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curling leaves on a plant
Photo: Freshclover, CC BY-SA 4.0

Check these first

  1. Feel the soil to see if it is dry.
  2. Observe if the leaves uncurl in the cool of the morning.
  3. Check the weather forecast for recent heat waves.

Likely causes

  1. Dehydration

    Possible

    How to tell: The leaves curl inward to conserve moisture during a dry spell. The soil will feel very dry and crumbly to the touch.

    What to do: Water the grass deeply, ensuring the moisture reaches 3 to 4 inches into the soil. Repeat this every 7 to 14 days during hot, dry weather.

  2. Heat Stress

    Possible

    How to tell: The blades curl during the hottest part of the day but look better in the morning. This is a temporary reaction to extreme temperatures.

    What to do: Provide a light watering in the early morning to help the plant stay cool. If possible, provide some light shade during the peak afternoon heat.

Curling leaves on other plants

Find out what's wrong with your quackgrass

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

Worry if the leaves stay curled even after you water the soil. If the blades turn brown and crispy, the plant is severely stressed.

Stopping it coming back

Maintain a consistent watering schedule during extreme heat. Mulching around the base can help keep the soil moisture stable.

Quackgrass: curling leaves? Check yours with a photo

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

Is curling always a bad sign?
Not always, as it is a natural defense mechanism against water loss. It is only a problem if the grass stays curled for several days.
How much water does it need?
Quackgrass is drought tolerant, but it appreciates a good soaking every 1 to 2 weeks during dry periods. Do not let the soil stay bone dry for too long.

Guides to these causes

More problems with Quackgrass

Back to the Quackgrass 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.