Pocket Botanist
Check these first
- Observe the direction the plant is leaning.
- Measure the light intensity in the current location.
- Check if the plant has been fertilized recently.
Likely causes
Insufficient light
Most likelyHow to tell: The stems are long, thin, and leaning heavily toward the nearest light source.
What to do: Move the plant to a spot with brighter, indirect light. If indoors, a south or west facing window is ideal.
Excessive nitrogen
PossibleHow to tell: The plant is growing very fast but the stems are weak and floppy.
What to do: Reduce the frequency of fertilization. Only feed the plant once or twice during the growing season with a balanced fertilizer.
Find out what's wrong with your reed sweet-grass
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
Some stretching is normal during the low light of winter. Worry if the stems become so weak they cannot stand up on their own.
Stopping it coming back
Provide consistent bright, indirect light throughout the year. Rotate the pot occasionally to ensure even growth.
Reed sweet-grass: leggy growth? Check yours with a photo
Every plant is a little different. Take a photo of your reed sweet-grass 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Can I cut back leggy stems?
- Yes, you can trim back leggy stems to encourage fuller growth. The plant will quickly send up new shoots.
- Will moving it to full sun help?
- Yes, this plant enjoys full sun to partial shade. Just make sure to keep the soil very moist if you move it into stronger light.
More problems with Reed sweet-grass
Back to the Reed sweet-grass 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.