I don't know about purple irish potatoes, but I grew some purple sweet potatoes last year. These were REALLY intense purple. I thought the foliage would be purple tinted, for ornamental variety, but was the same color as regular orange sweet potatoes. DH really liked the taste, starchy, dry and not sweet. I got them at the organic section; will grow again this year for DH.
I tried the vertical irish potatoes last year, but I killed them. Not enough water?
I tried the vertical irish potatoes last year, but I killed them. Not enough water?