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Gooseberry mildew

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

Do not Time to act in January

Do not Time to act in February

Do Time to act in March

Do Time to act in April

Do 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

Also know as American gooseberry mildew, this greyish-white powdery growth of the fungal disease Sphaerotheca mors-uvae appears on new shoots, which can become distorted and die off. The mildew also affects the upper leaf surfaces and stems of the plant, while the skin on affected fruits turns from a white mould to a light brown. The fruits can be scraped clean and eaten, although they’ll turn brown when cooked.

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Symptoms

Greyish-white powdery fungal growth spreads across the upper leaf surfaces and stems of gooseberry plants, eventually affecting the fruit. It’s often accompanied by dieback of new growth.

Find it on

gooseberries, blackcurrants

Organic

Space out plants and cut out congested branches to improve air circulation. Cut off any infected branches straight away. Plant resistant cultivars, such as ‘Invicta’ and ‘Greenfinch’.

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Chemical

Use an all-purpose feed, rather than one high in nitrogen, as this will only generate soft new growth that’s prone to infection.