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spreading dogbane · Apocynum androsaemifolium

Why is my spreading dogbane showing signs of root rot?

Root rot is less common for this plant, as it is quite hardy, but it usually happens when the soil stays soggy for too long. Check the soil moisture levels and drainage immediately to save your plant.

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root rot on a plant
Photo: Ninjatacoshell, CC BY-SA 3.0

Check these first

  1. Feel the top inch of soil to see if it is wet.
  2. Inspect the drainage holes to ensure they are not blocked.
  3. Check the base of the stems for soft or blackened tissue.

Likely causes

  1. Poor Drainage

    Most likely

    How to tell: The soil remains wet long after watering, and the base of the stems may look mushy or discolored.

    What to do: Ensure the pot has large drainage holes at the bottom. If planting in the ground, amend heavy clay soil with organic matter to improve water movement.

  2. Overwatering

    Possible

    How to tell: Leaves turn yellow and drop while the soil feels constantly damp to the touch.

    What to do: Wait until the top inch of soil is completely dry before watering again. Stick to a schedule of every 7 to 14 days depending on the heat.

Root rot in other plants

Find out what's wrong with your spreading dogbane

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 stems are mushy at the base and the plant is wilting despite wet soil, the rot is likely advanced and may be fatal.

Stopping it coming back

Always allow the top inch of soil to dry out between waterings and use well draining soil.

Spreading dogbane: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your spreading dogbane 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.

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Questions people ask

Can I save a plant with root rot?
If the rot is caught early, you can trim away the black, mushy roots and repot in fresh, dry soil. If the majority of the root system is mushy, the plant may not recover.
Does this plant like wet feet?
No, spreading dogbane prefers well drained soil and will suffer if left in standing water.

More problems with spreading dogbane

Back to the spreading dogbane 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.