Pocket Botanist
Check these first
- Smell the soil for a sour or rotten odor.
- Check if the pot has drainage holes.
- Feel if the soil is constantly muddy.
Likely causes
Overwatering
Most likelyHow to tell: The soil stays soggy for days and the leaves start to wilt or turn yellow.
What to do: Stop watering immediately and let the top few inches of soil dry out. If the soil is waterlogged, you may need to repot the plant into fresh, well draining soil.
Poor Drainage
PossibleHow to tell: Water pools on the surface of the soil and the plant looks stunted.
What to do: Ensure your pot has drainage holes at the bottom. If the pot is sitting in a saucer, empty the excess water after every watering.
Find out what's wrong with your giant hogweed
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
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When to worry
Root rot is serious if the base of the stem turns black or mushy. If the roots are brown and slimy, the plant may be beyond saving.
Stopping it coming back
Only water when the top inch of soil feels slightly dry and ensure your container drains well.
Giant Hogweed: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your giant hogweed 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 save a plant with root rot?
- If you catch it early, you can trim away the mushy, black roots and repot the plant in fresh soil. Make sure to use a clean pot to avoid spreading fungus.
- How often should I water to avoid this?
- Check the soil every 3 to 7 days. If it still feels damp, wait another day or two before adding more water.
More problems with Giant Hogweed
Back to the Giant Hogweed 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.