I grew sarpo Mira and blue Danube under mypex ground cover.planted 4″ deep and left them to themselves. No earthing up. In the Mira I got huge crop which they are known for. Not as much in Danube type. Both were compared to drills that were earthed up. I’ll be continuing with this method next season. I’ve incorporated lots of horse manure onto the soil.
It’s so much easier on the back without having to dig or earth up. When harvesting I simply use my hands to pick out the spuds.
