Can I save a plant with root rot?

If you catch it early, you can trim away the mushy, dark roots and repot the plant in fresh, dry soil. If the majority of the root system is black and slimy, it is usually too late.

How often should I water to prevent this?

Water every 5 to 10 days depending on the heat. Always check that the top inch of soil is dry before adding more water.

California blackberry: root rot, causes and fixes

Check these first

Stick your finger 2 inches into the soil to check for dampness.
Examine the drainage holes of your container for blockages.
Smell the soil for any signs of decay or rot.

Likely causes

Waterlogged Soil
Most likely
How to tell: The leaves turn yellow or wilt despite the soil being wet. You might notice a sour smell coming from the soil or the base of the plant.
What to do: Stop watering immediately and allow the top 2 inches of soil to dry out. If the plant is in a pot, ensure the drainage holes are clear and not blocked by debris.
Heavy Clay Soil
Possible
How to tell: Water pools on the surface for a long time after rain or watering. The roots struggle to breathe because the soil is too dense.
What to do: Amend the soil with organic matter like compost or pine bark to improve drainage. If the plant is in a container, repot it into a well draining potting mix.

Root rot in other plants

Find out what's wrong with your california blackberry

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 canes are turning black or mushy at the base, the rot may have spread too far. If the plant is wilting severely, it is in critical condition.

Stopping it coming back

Always use a well draining soil mix and never let the plant sit in a saucer of standing water.

California blackberry: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your california blackberry 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 trim away the mushy, dark roots and repot the plant in fresh, dry soil. If the majority of the root system is black and slimy, it is usually too late.
How often should I water to prevent this?: Water every 5 to 10 days depending on the heat. Always check that the top inch of soil is dry before adding more water.

Why does my California blackberry have root rot?