Check these first
- Feel the soil at least 2 inches deep to see if it is soggy.
- Inspect the base of the plant for soft or black tissue.
- Check that your pot has functional drainage holes.
Likely causes
Overwatering
Most likelyHow to tell: The soil feels constantly wet and the base of the plant looks dark or mushy.
What to do: Stop watering immediately and let the soil dry out completely. If the rot is widespread, you may need to remove the plant and trim away the affected roots before repotting in fresh, well draining soil.
Poor Drainage
PossibleHow to tell: Water pools on the surface of the soil long after you have finished watering.
What to do: Ensure your pot has large drainage holes at the bottom. Mix perlite or coarse sand into your potting mix to improve aeration and water flow.
Find out what's wrong with your sea lavender
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
If the base of the stem is completely soft or mushy, the plant is likely beyond saving. It is normal for the plant to look slightly wilted if the soil is very dry, but it should recover after a drink.
Stopping it coming back
Always allow the soil to dry out significantly between waterings and ensure your plant gets plenty of direct sunlight.
Sea Lavender: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your sea lavender 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 and only a few roots are affected, you can trim the mushy parts and repot it. If the main crown is soft, the plant usually cannot be saved.
- How often should I water my Sea Lavender?
- Water every 7 to 14 days, but only when the soil is dry to the touch. It is much better to underwater than to overwater this plant.
More problems with Sea Lavender
Back to the Sea Lavender 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.

