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Giant reed · Arundo donax

Why are the tips of my giant reed leaves turning brown?

Brown tips on giant reed usually signal that the plant is thirsty or dealing with low humidity. Start by checking if your soil has dried out completely between waterings.

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Check these first

  1. Check the soil moisture level immediately.
  2. Observe the plant for signs of wilting.
  3. Move the plant away from direct heat vents or drafts.

Likely causes

  1. Underwatering

    Most likely

    How to tell: The soil feels dry and pulls away from the edges of the pot. The leaves may also feel brittle or crispy.

    What to do: Water the plant deeply until liquid flows from the drainage holes. Keep the soil consistently moist by checking it every 3 to 5 days.

  2. Low humidity

    Possible

    How to tell: The tips turn brown even though the soil is moist. This is common in dry indoor environments or during hot, windy weather.

    What to do: Mist the leaves occasionally or place the plant in a more humid area. Keeping the plant in a tray with pebbles and water can also help.

Brown tips on other plants

Find out what's wrong with your giant reed

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

Minor browning is common in very hot weather. Worry if the brown patches expand quickly toward the base of the leaf.

Stopping it coming back

Keep the soil consistently moist and avoid placing the plant near air conditioning or heating vents.

Giant reed: brown tips? Check yours with a photo

Every plant is a little different. Take a photo of your giant reed 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 trim the brown tips?
You can trim the brown parts with sharp scissors. Cut just outside the green tissue to avoid damaging the healthy part of the leaf.
Does giant reed like misting?
It enjoys the extra moisture, especially if you are growing it in a container indoors. It helps mimic its natural riverside habitat.

Guides to these causes

More problems with Giant reed

Back to the Giant reed 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.