How to Save Onion Seeds


For many gardeners, saving seeds from one year to the next is a challenging and enjoyable exercise that often has mixed results. Many garden vegetables have seeds that can be easily saved, while others, such as onions, can prove to be difficult. The key to saving any type of seed is to know the plant. Hybrid plants may not produce seeds that will grow the exact same plant the next year.

Step 1

Select one or two strong and healthy onion plants in your garden and allow them to form seed heads at the top of the plant.

Step 2

Watch the seed heads closely and remove them before they split open. You can then dig the onions for use.

Step 3

Open the seed head over clean paper towels. Spread the seeds over the towels to dry for two to three days.

Step 4

Place the onion seed in a paper envelope and seal the envelope closed. Label the envelope with the contents and the date of saving.

Step 5

Store the sealed envelope in a glass jar with a tight fitting lid and place in a cool, dark place until ready to plant.

Things You'll Need

  • Mature onions plants
  • Paper towels
  • Paper envelopes
  • Glass jar with a tight fitting lid
  • Pen or marker


  • University of California: Collect, Dry and Store Your Garden Seed Properly (PDF)
  • University of Illinois: Saving Seed from the Garden
  • "Encyclopedia of Organic Gardening"; the Editors of Organic Gardening and Farming Magazine; 1975
Keywords: save onion seeds, saved onion seeds, harvest onion seeds

About this Author

G. K. Bayne is a freelance writer, currently writing for Demand Studios where her expertise in back-to-basics, computers and electrical equipment are the basis of her body of work. Bayne began her writing career in 1975 and has written for Demand since 2007.