Pocket BotanistCheck these first
- Check the soil moisture level.
- Observe the weather patterns for recent heat spikes.
- Examine the leaf blades for signs of physical damage.
Likely causes
Underwatering
Most likelyHow to tell: The soil is bone dry and the leaf tips are brittle and crunchy.
What to do: Increase your watering frequency to every 7 days during hot, dry spells. Give the plant a deep soak to ensure water reaches the deep rhizomes.
Heat stress
PossibleHow to tell: The browning happens during extreme heat waves even if the soil is moist.
What to do: Provide a light layer of mulch around the base to keep the roots cool. The grass will likely recover once temperatures return to a normal range.
When to worry
Worry if the browning moves down the entire length of the leaf. It is normal for the very tips to brown slightly as the plant grows in full sun.
Stopping it coming back
Keep the soil consistently moist during the peak of summer and provide adequate space for air circulation.
Not sure which one it is? Photograph your cogon grass.
This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
Questions people ask
- Should I trim the brown tips off?
- You can trim them for aesthetic reasons, but it does not fix the underlying cause. Use clean, sharp scissors to avoid damaging the healthy tissue.
- Does full sun cause brown tips?
- Cogon grass loves full sun, but it still needs enough water to support that growth. If it gets too dry, the tips will brown as a protective response.
More problems with Cogon grass
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.