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Courgette rot

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Time to act
Time to act

Do not Time to act in January

Do not Time to act in February

Do not Time to act in March

Do not Time to act in April

Do not Time to act in May

Do Time to act in June

Do not Time to act in July

Do not Time to act in August

Do not Time to act in September

Do not Time to act in October

Do not Time to act in November

Do not Time to act in December

Poor early-summer weather, with a prolonged cold spell, and few insects results in poor pollination. This means courgettes fail to develop, and they quickly rot on the plant. However, this is only a temporary problem, and once the weather starts to improve, so then will the crop.

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Symptoms

Baby courgettes fail to develop. Instead of growing into a long or round shape, they quickly rot on the plant.

Find it on

courgettes, outdoor cucumbers, marrows, pumpkins, squashes

Organic

Pollinate the early batch of flowers by hand, rather than relying on insects. Pick an open male flower (which doesn’t have a swelling at the base) and strip off the petals to expose the stamens and pollen. Then just rub them thoroughly against the stigma of a female flower (which has a swelling or an immature fruit at its base).

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Watch Monty Don plant out courgette plants in our video from the Gardeners’ World garden at Berryfields.