Sow outdoors in May. Pumpkins can be sown outdoors for ease. Choose a sunny, sheltered location for best results and wait until the soil has warmed up, ideally to around 10°C or more. If the soil is very heavy, cold or waterlogged an indoor sowing is preferable.
Pumpkins like good fertile soil so it’s worth digging in a slow release fertiliser or some organic matter before you start. Sow edge downwards directly where the plants are to grow, 5cm deep and spaced 90cm apart. Gently firm the soil and keep moist. Remove any weeds as they appear. Early sowings will benefit from cloche protection.