Space tubers generously for a bigger crop from each plant
Most soils are warm enough for maincrop potatoes from the middle of the month, so make sure you’re ready to plant them out. They do best in soil enriched with rotted manure together with a general fertiliser such as blood, fish and bone meal added when planting.
Dig out a trench 12cm deep. Make rows 75cm apart to allow for earthing up the plants as they grow. Stand the tubers along the row at 40cm intervals. Potatoes form above the planted tuber at the base of the ridge.