Organic pumpkins do best when the seeds are planted directly in the ground. If your growing season is very short, seed indoors in peat pots about 2 to 4 weeks before last spring frost. Be sure to harden off before transplanting. Wait until the plant soil is 21C or more before sowing seeds. Optimum soil temperature is 35C. Pumpkins are very sensitive to the cold.
Plant seeds in rows or “pumpkin hills,”. With hills, the soil will warm more quickly and the seeds will germinate faster. This also helps with drainage and pest control. Prepare the hills in advance with an abundance of horse or chicken manure dug deep into the ground (12 to 15 inches). Space hills 4 to 8 feet apart.