The pumpkin, Cucurbita pepo, is a member of the same family as melons, cucumbers and squash. A flowering vine, the pumpkin is a warm-weather crop that is harvested in the fall. Once the pumpkin fruit is harvested, the pulp is used in any number of culinary dishes, while the seeds can be roasted and eaten or saved to be planted in the garden. Once you have harvested the pumpkin seeds it's easy to prepare them for planting.
Place the seeds in a bowl of warm, soapy water. Rub off any pulp that may be clinging to them.
Pour the seeds into a strainer and run cool, clean water over them until they are rinsed thoroughly.
Place the seeds on a baking sheet lined with paper towels and allow them to dry for four weeks. Turn them over several times during the first three days.
Place the seeds in an envelope and store in a cool, dry area until ready to be planted. The seeds can be saved for six years.