Can I save a plant with root rot?

If you catch it early, you can improve drainage and let the soil dry out to save the plant. If the roots are already black and mushy, it is usually best to remove the plant.

Does mulch cause root rot?

Mulch is great for moisture retention, but keep it a few inches away from the main stem. If mulch is piled against the stem, it can trap too much moisture and lead to rot.

How do I fix root rot in my winter squash? Causes and fixes

Check these first

Check the soil moisture at a depth of 3 inches.
Ensure the area around the base of the plant is not holding standing water.
Smell the soil near the roots for a sour or rotten odor.

Likely causes

Overwatering
Possible
How to tell: The leaves turn yellow and the plant appears stunted or wilts even when the soil is wet. If you dig slightly, the roots will look brown, mushy, and smell bad.
What to do: Stop watering immediately and allow the top 2 inches of soil to dry out. If the plant is in a container, ensure the drainage holes are not blocked.
Poor Soil Drainage
Possible
How to tell: Water pools on the surface of the soil for a long time after watering. The roots are suffocating because they cannot get enough oxygen.
What to do: Amend the soil with organic matter like compost to improve structure. If the plant is in a low spot, consider mounding the soil to improve drainage.

Root rot in other plants

Find out what's wrong with your winter squash

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 stem base turns soft and dark brown, the rot has likely spread too far to save the plant. It is normal for roots to be slightly darker when they are very mature, but they should remain firm.

Stopping it coming back

Water only when the top inch of soil feels dry to the touch. Always plant in soil that drains well and avoid heavy clay areas.

Winter Squash: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your winter squash 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 you catch it early, you can improve drainage and let the soil dry out to save the plant. If the roots are already black and mushy, it is usually best to remove the plant.
Does mulch cause root rot?: Mulch is great for moisture retention, but keep it a few inches away from the main stem. If mulch is piled against the stem, it can trap too much moisture and lead to rot.

How do I fix root rot in my winter squash?