Pumpkin seeds - Hundredweight Ref: SUT185610 Features - A 'wacky' character to encourage children's interest in gardening, , I'm Perky. Sow: April-June. Plant Out: May-June. Pumpkins Ready: September-October. Sow seeds in 7.5cm (3") pots of compost, 25mm (1") deep. Keep on a sunny windowsill or greenhouse to grow. Plant out when all danger of frost has past. Between May and June you can sow directly outside. Price: £0.99 Quantity: