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Botrytis Blight in Lavender

How to identify and treat botrytis blight in Lavender.

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Lavender care requirements

water
Low water needs once established. Allow to dry between waterings.
soil
Sandy, alkaline, well-draining soil. Does not like clay.
light
Full sun — 6+ hours essential.
symptoms

Symptoms to look for in Lavender

Fuzzy grey mould on flower spikes and foliage, particularly after damp weather, causing affected growth to brown and collapse.

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Common causes in Lavender

Lavender's dense, low-growing habit and preference for dry conditions mean it's especially vulnerable to Botrytis during unusually wet or humid spells, when moisture lingers in the tightly packed foliage.

healing

How to treat botrytis blight in Lavender

Remove and destroy affected flower spikes and foliage, and improve airflow by thinning dense growth or spacing plants further apart.

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Preventing botrytis blight in Lavender

Ensure excellent drainage and airflow, avoid overhead watering, and prune annually to prevent the dense growth that traps humidity.

Botrytis Blight in Lavender — Symptoms & Treatment | GreenScout