Sow late March to May in a propagator on a windowsill in a greenhouse/house at approximately 20-25°C (68-78°F) using a quality compost. Cover seeds with 19mm (¾") compost (Germination 5-8 days). Grow on, planting out when frost risk has passed, 120cm (4') between plants each way. Alternatively sow outside May/June, 2 seeds per station. Thin to strongest seedling. Restrict fruits to 3-4 per plant. To grow really big pumpkins restrict to one fruit and feed regularly with potassium fertiliser. Grows best in rich soil. Water and feed regularly. Sowing to Cropping: 18-22 weeks.