What to Do About Root Rot in Lavender? Causes and Solutions

1. Replace the Soil

Cause: Lavender roots are not tolerant of water, so the soil must drain well. Once water accumulates because of poor drainage, the roots cannot breathe and root rot occurs.

Solution: Replace it with loose soil that drains and breathes well, so its roots can breathe freely and no water accumulates, which is more favorable for lavender growth.

2. Reduce Watering

Cause: Lavender is not tolerant of dampness, so watering too frequently or in too large an amount will cause water accumulation, and the roots will rot.

Solution: Follow the principle of watering when dry and letting it dry out between waterings, and reduce the amount of watering in general. Usually water once a day in summer, and in other seasons water once every 3-5 days. When watering, water thoroughly, and do not let water fall on the leaves, because it may cause disease.

3. Fertilize in Moderation

Cause: Many people think that the more fertilizer they apply, the better the plant will grow, but this is not actually the case. Excessive fertilizing will cause its roots to rot; the accumulation of too many nutrients keeps it from breathing, which leads to root rot.

Solution: Fertilize on schedule, and do not apply too much at one time. If you accidentally apply too much, water promptly so the excess fertilizer can be flushed out as soon as possible; the possibility of fertilizer burn is relatively small.

4. Adjust the Temperature

Cause: Too low a temperature will freeze and damage lavender, and combined with water accumulation, it easily leads to root rot.

Solution: Adjust the temperature appropriately; in winter the lowest temperature must not be below 10°C.