Pocket BotanistCheck these first
- Feel the soil to see if it is dry to the touch.
- Check the water source you are using for the plant.
- Look for signs of heat stress on the leaves.
Likely causes
Water quality issues
Most likelyHow to tell: The tips turn brown and crispy while the rest of the leaf remains green. This often happens if you use tap water with high chlorine or fluoride levels.
What to do: Switch to using collected rainwater or distilled water for a few weeks. This helps flush out excess salts that have accumulated in the soil or potting medium.
Drying out
PossibleHow to tell: The leaf tips curl and brown because the plant missed its regular watering. Even a short period of drought can stress this moisture loving plant.
What to do: Increase your watering frequency to ensure the soil never dries out. Keep the base of the plant sitting in at least 1 to 2 inches of water during the heat of summer.
Find out what's wrong with your yellow flag iris
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
Brown tips are rarely fatal but indicate the plant is stressed. It is normal for the very oldest leaves to brown and die as the plant grows new ones.
Stopping it coming back
Maintain consistent moisture levels and use rainwater whenever possible to avoid mineral buildup.
Keep your yellow flag iris healthy from here
Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.
Questions people ask
- Should I trim the brown tips off?
- You can trim them for aesthetic reasons using clean scissors. Cut just above the healthy green tissue to avoid damaging the plant further.
- Is my plant getting too much sun?
- Yellow flag iris loves full sun, but if the tips are browning during a heatwave, providing partial shade in the afternoon can help.
More problems with Yellow flag iris
Back to the Yellow flag iris guide
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.