???I took over my allotment last year and noticed this orange powdery stuff on the leaves and stems,it was on a patch where I had my potatoes and on the weeds in that patch.(It didn't seem to effect the crop though).
This year it seems to have spread onto other areas on the weeds and some winter onions I put in.
Please could anyone advise what it is, whether I should be concerned and also how to go about getting rid of it. I would be really grateful for any suggestions, thanks