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Fine leaved flax · Linum tenuifolium

Why is my Linum tenuifolium rotting at the base?

Root rot is a common issue for this flax when it sits in soggy soil for too long. Check the moisture level of your soil immediately to see if it is holding too much water.

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

Check these first

  1. Feel the soil two inches down to check for dampness.
  2. Inspect the drainage holes to ensure they are not blocked.
  3. Check the base of the stems for soft or discolored tissue.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The base of the stems turns mushy or black, and the plant starts to wilt despite wet soil. You might also notice a sour smell coming from the pot.

    What to do: Stop watering immediately and let the soil dry out completely. If the rot is advanced, remove the plant from its pot, trim away any black or slimy roots, and repot it into fresh, well draining soil.

  2. Poor Drainage

    Most likely

    How to tell: Water pools on the surface or takes a long time to drain through the pot after you water. The soil stays heavy and dense for weeks.

    What to do: Ensure your pot has large drainage holes at the bottom. Mix your potting soil with perlite or coarse sand to improve airflow and drainage.

Find out what's wrong with your fine leaved flax

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 entire base of the plant is mushy and the stems are collapsing, it is likely too late to save. Some minor wilting after a heavy rain is normal if the soil drains quickly.

Stopping it coming back

Always allow the soil to dry out significantly between waterings, typically waiting 7 to 14 days. Use a gritty, fast draining soil mix designed for sun loving plants.

Keep your fine leaved flax 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.

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Questions people ask

Can I save a plant with root rot?
Yes, if you catch it early. Trim the dead roots, use fresh soil, and be very careful not to overwater while it recovers.
How often should I water my flax?
Water every 7 to 14 days depending on your local heat and light. Always check that the soil is dry before adding more water.

More problems with Fine leaved flax

Back to the Fine leaved flax 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.