Got this message from OSF stalwart Adrian about his Lady Balfour seed potatoes. Amazing!

12 lbs of potatoes off a single One Seed Lady Balfour seed potato! Grown on the allotment where there had been a midden that I’d had manure in for a few years. Shows what a well manured soil will give you! The ones around about it were also good but not nearly as bountiful as this plant!