Harvesting your own pumpkin seeds allows you to not only eliminate the cost of buying new seeds for the following year's planting, but also yields the freshest seeds for munching. To harvest pumpkin seeds, you need to clean them off and put them in a good place to dry and your seeds should be ready to store for a few years.
Use a heavy duty knife to slice open a hole in the top of your pumpkin if you are carving it, or simply cut the pumpkin in half if will be baked.
Scoop out the mush of pulp and seeds with your hands, or a sturdy spoon, by scraping it from the inside edges of the pumpkin and placing it in a bowl. Sort the pulp from the seeds and discard the pulp.
Rinse the seeds under cool water in a colander or strainer to wash away any sticky feel and pull away remaining pulp pieces.
Dry the seeds with a paper towel by patting away any extra water. Spread out a few new paper towels and place the seeds in a single layer on the paper towels.
Make sure the paper towels and seeds are in a place where the air is warm and dry and leave them to dry out for one to two weeks. Flip the seeds over every other day to ensure they dry evenly.
Write the type of pumpkin and the date you collected the seeds on the outside of an envelope before putting the dried seeds inside it. Store the envelope in a cool, dry place away from sunlight.