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How to Preserve Squash Seeds

By Jenny Harrington ; Updated September 21, 2017
Grow squash plants from your own saved seeds.

Saving seeds from your garden vegetables lets you grow your favorites year after year without the need of purchasing new seed. Squash is one vegetable that has large, easy-to-harvest seeds. There are summer squash varieties, such as zucchini, as well as winter squashes like butternut and acorn. Squash readily crosses with other varieties in the garden, so save seed only from plants that are not grown within 50 feet of another squash variety.

Harvest summer squash for seeds when the vegetable's skin is firm and cannot be dented with a fingernail. This may be two to four weeks after you would normally harvest the squash for consuming. Harvest winter squash when you would normally harvest for eating.

Cut the squash in half lengthwise with a sharp knife. Scoop the seeds out of the two squash halves and place them in a colander.

Rinse the seeds under lukewarm running water. Remove as much of the pulp as possible.

Spread the squash seeds out on a paper towel and place them in a warm, well-ventilated place. Dry the seeds for five to seven days.

Place the seeds in a sealed plastic bag. Label the bag with the squash variety and year harvested. Store in a cool, dry place until you are ready to plant.


Things You Will Need

  • Knife
  • Colander
  • Paper towels
  • Plastic bags


  • Squash seeds remain viable for two to three years if stored in a cool place.
  • Store squash seeds in a sealed jar in the refrigerator. The temperatures in the fridge help prolong the life of the seeds, and inside the fridge the seeds are safe from pests.


  • Do not save seeds from hybrid squash varieties. These may not germinate, and if they do grow they will not produce fruit that is the same as the parent plant. In some cases the fruit is inedible if it grows at all.

About the Author


Jenny Harrington has been a freelance writer since 2006. Her published articles have appeared in various print and online publications. Previously, she owned her own business, selling handmade items online, wholesale and at crafts fairs. Harrington's specialties include small business information, crafting, decorating and gardening.