Sow pumpkin seed indoors 2-3 weeks before your last frost date or direct seed outdoors once the soil has warmed to 21 degrees Celsius. Sow seeds 2.5 cm deep. Sow 2-3 seeds 30 cm apart and thin to the strongest seedling. Provide plants with lots of compost for strong healthy growth. If cucumber beetles are a problem, cover the young plants with floating row cover until they start to flower then remove cloth so pollination can occur.