i allways chit my seed potatos i buy them end of december begining of january but i keep them in my shed which is cold so very little happens to them, then put them in the greenhouse in egg trays to chit them in mid febuary wait until the shoots are about 1 inch long aprox and purple and then plant 4 of them in my buliders buckets 4 per bucket 1 inch of compost a layer of growmore then another 1 inch of compost put potatos in and fill bucket about half full leave them grow so shoots have come through the compost then fill the bucket to top, after they have grown and started to die back i get about 20 to 30 lovley new spuds for boiling the skin just peels off with your fingers yum yum, i find charlotte and arron piot are the best for early spuds