Thank you everyone for the replies I think I will leave it be and see what happens. It is still flowering so hopefully won’t harm the plant too much. Thanks for the advice about sugar for the bees they have been very busy and any tips on encouraging them are welcomed.
If it's rust, the pustules will develop and finally burst and spread more fungal spores. If it's a gall, I believe it's usually caused by a bacteria.
You need to watch and see how it goes and, at the end of the season, make sure you clear away all the affected foliage as it dies down and remove it from the garden. Not suitable for the compost heap.
In France they sell a concoction made from horsetail stems to use as an organic fungicide.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
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leave it be and see what happens. It is still flowering so hopefully won’t harm the plant too much. Thanks for the advice about sugar for the bees they have been very busy and any tips on encouraging them are welcomed.
You need to watch and see how it goes and, at the end of the season, make sure you clear away all the affected foliage as it dies down and remove it from the garden. Not suitable for the compost heap.
In France they sell a concoction made from horsetail stems to use as an organic fungicide.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.