I have blue vates curled kale, red russian and nero di tosca, all growing really well but now they are all getting yellow sorts of bubbles on them. I have been trying to cut the affected leaves straight away, but if I leave them they get a sort of white powder in the 'bubbles'. I assume it is some sort of desease, does anyone have any suggestions please as I don't want it to spread any more.
Thanks
Ali
Thanks
Ali
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