Can I save a plant with root rot?

If the rot is caught early, you can improve drainage and reduce watering. If the roots are black and slimy, the plant usually cannot be saved.

How often should I water my Musk thistle?

Once established, it rarely needs water. Only water every 7 to 14 days during severe drought.

Musk thistle: root rot, causes and fixes

Check these first

Feel the soil at the base of the plant.
Check if the soil is heavy clay or holds water.
Inspect the stem base for soft or dark spots.

Likely causes

Poor soil drainage
Most likely
How to tell: The base of the stem feels soft or mushy and the leaves wilt despite moist soil. You might also notice a sour smell coming from the dirt.
What to do: Improve the soil by mixing in coarse sand or grit to help water move away from the roots. If the plant is in a pot, ensure it has drainage holes and stop watering until the top 3 inches of soil are dry.
Overwatering
Possible
How to tell: The plant looks yellow and sickly while the soil remains constantly wet. Musk thistles are drought tolerant and do not need frequent watering once established.
What to do: Wait until the soil is dry to the touch before adding more water. Only water every 14 days if the weather is extremely hot and dry.

Root rot in other plants

Find out what's wrong with your musk thistle

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.

When to worry

If the entire base of the plant is mushy and the leaves are collapsing, it is likely too late to save it. Some yellowing of the lowest leaves is normal as the plant matures.

Stopping it coming back

Plant your thistle in a sunny spot with excellent drainage and avoid watering it unless the soil is completely dry.

Musk thistle: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your musk thistle 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.

Get the app · Or check it from a photo now, free

Questions people ask

Can I save a plant with root rot?: If the rot is caught early, you can improve drainage and reduce watering. If the roots are black and slimy, the plant usually cannot be saved.
How often should I water my Musk thistle?: Once established, it rarely needs water. Only water every 7 to 14 days during severe drought.

Why is my Musk thistle suffering from root rot?