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What causes brown marks on broad bean plants?

💡 Our Advice

This is a very severe attack of rust, so destroy the plants to reduce infection next year. This can be controlled with Systhane Fungus Fighter from Bayer, but start treating next year's plants as soon as flower buds start developing.

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Answered by

Steve Bradley M.A M.Hort RHS

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What causes brown marks on broad bean plants?

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