Potato self setter's

[jacob marley]

Why is it when you dig some potatoes and leave the odd one in the ground they start growing straight away but if you do not lift a row and leave until later on in year why don't they grow the same as the odd ones jacob

[shirlthegirl43]

Do the 'stored' ones not sprout because they are still joined to the plant?

[terrier]

I've kept potatoes for ages that havn't sprouted but as soon as I plant them in pots of soil, off they go, three foot tall in no time. The answer lies in the soil (who said that?)