Pocket Botanist
Check these first
- Stick your finger into the soil to feel for sogginess.
- Check that the pot has working drainage holes.
- Smell the soil for a sour or rotten odor.
Likely causes
Overwatering
PossibleHow to tell: The plant will look wilted even when the soil is wet, and the stems may turn mushy at the base. The roots will look dark and slimy rather than firm and white.
What to do: Stop watering immediately and let the top 2 inches of soil dry out. If the roots are badly damaged, trim away the black parts and repot in fresh, well draining soil.
Poor Drainage
PossibleHow to tell: Water pools on the surface of the soil for a long time after you water. The plant stops growing and the leaves begin to yellow.
What to do: Ensure your pot has holes at the bottom to let excess water escape. Use a potting mix that includes perlite to improve drainage.
Find out what's wrong with your spiny sowthistle
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 base of the stem is soft and mushy, the plant is likely too far gone to save. Mild wilting is normal if you missed a watering, but mushy stems are a major red flag.
Stopping it coming back
Only water when the top inch of soil feels dry to the touch and never let the pot sit in a saucer of standing water.
Keep your spiny sowthistle 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
- Can I save a plant with root rot?
- If you catch it early, you can trim the bad roots and repot it. If the rot has reached the main stem, it is usually best to start over.
- How often should I check the soil?
- Check it every 3 to 4 days. This helps you learn how fast your specific plant uses water.
More problems with spiny sowthistle
- Why are there bugs on my spiny sowthistle?
- Why is my spiny sowthistle drooping?
- Why is my spiny sowthistle looking so leggy?
- Why are my spiny sowthistle leaves turning yellow?
- Why are my spiny sowthistle leaf tips turning brown?
- Why is my spiny sowthistle dropping its leaves?
- Why does my spiny sowthistle have spots on its leaves?
- Why are the leaves on my spiny sowthistle curling?
Back to the spiny sowthistle 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.