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Big bluestem · Andropogon gerardi

Why do my Big Bluestem leaves have brown tips?

This is less common for Big Bluestem, which is a hardy native grass built for tough conditions. Brown tips usually happen when the plant is exposed to extreme heat or drying winds that outpace its root system.

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Check these first

  1. Feel the soil to see if it is bone dry several inches down.
  2. Observe if the browning happens after a period of intense, drying wind.
  3. Check if you have been using tap water with high mineral content.

Likely causes

  1. Drought Stress

    Possible

    How to tell: The tips turn crisp and brown during a long, hot dry spell. This is the plant's way of conserving moisture by reducing its surface area.

    What to do: Give the plant a deep watering once a week during extreme heat. Apply a two inch layer of mulch around the base to help the soil retain moisture.

  2. Salt Accumulation

    Possible

    How to tell: The tips brown even when the soil feels moist, often occurring after a long period without rain. This happens when minerals build up in the soil from tap water or fertilizer.

    What to do: Flush the soil with a heavy watering to wash away excess salts. Avoid using chemical fertilizers that contain high levels of salts.

Brown tips on other plants

Find out what's wrong with your big bluestem

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 browning moves from the tips down into the main blade. It is normal for the tips to brown slightly as the plant enters its late summer or fall color phase.

Stopping it coming back

Mulch around the base of the plant to keep the roots cool and moist. Water deeply at the base rather than sprinkling the foliage.

Big bluestem: brown tips? Check yours with a photo

Every plant is a little different. Take a photo of your big bluestem 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 off?
You can snip the brown tips off with clean shears for aesthetic reasons. It does not affect the health of the grass.
Is my plant dying if the tips are brown?
No, Big Bluestem is very resilient and will likely recover once the weather cools or you adjust your watering. It is simply reacting to environmental stress.

Guides to these causes

More problems with Big bluestem

Back to the Big bluestem 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.