Hey Don I disagree about the digging.
Perhaps it depends on soil type.
Home acres soil is dense silt and tubers do not develop into it, or just a little, so they are all in the compost layer on top and harvesting is simply a pull, then a rummage.
Before the leaf canopy closes, I pull some compost around the stems, or sometimes I do that in early May before a frost.
If ever I see tubers appearing above the soil, I drop a little more compost over, or grass mowings could be used for that.
Those in the video had been untouched for two months.
John, mypex is ok but maybe harbours slugs in wetter areas.
