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Check these first
- Check the soil moisture at the base of the plant.
- Inspect the drainage holes in your pot.
- Smell the soil for a foul or swampy odor.
Likely causes
Poor Drainage
Most likelyHow to tell: The base of the plant feels mushy and the leaves turn yellow or collapse.
What to do: Improve the soil by mixing in sand or grit to increase drainage. If the plant is in a pot, ensure there are drainage holes and never leave it sitting in a saucer of water.
Overwatering
PossibleHow to tell: The soil stays constantly wet and smells slightly sour.
What to do: Adjust your watering schedule to every 7 to 14 days. Only water when the top inch of soil feels dry to the touch.
Find out what's wrong with your common grape hyacinth
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
If the bulb feels soft or squishy when squeezed, it is likely too far gone to save.
Stopping it coming back
Use well draining soil and always allow the top layer to dry out before adding more water.
Common grape hyacinth: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your common grape hyacinth 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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Or go to pocketbotanist.app/get on your phone
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Questions people ask
- Can I save a bulb with rot?
- If the rot is minor, you can trim off the mushy parts and replant in fresh, dry soil, but success is not guaranteed.
- How often should I water?
- Keep the soil moist during the growing season, but let it dry out once the foliage starts to yellow and die back.
More problems with common grape hyacinth
Back to the common grape hyacinth 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.