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1 Potatoes are raised from tubers saved from the previous year’s crop and known as ‘seed’ potatoes. They are planted during mid- and late spring. Use a spade to form 15 cm (6 in) drills that are uniformly deep.

2 Place seed potatoes in the base of the drill, 30 cm (12 in) apart for early crops and 40 cm (16 in) for main crops. Position the tubers with their ‘eyes’ (buds) facing upwards. Take care not to damage either the eyes or any small shoots.

3 Use a draw hoe to pull friable soil (from both sides of the row) over the tubers so that it forms a long, continuous mound 10–15 cm (4–6 in) high over the tubers. As the shoots grow, further ‘earthing up’ of the rows will be required.