How to Save Heirloom Tomato Seeds

Saving heirloom tomato seeds brings back those memories of science classes. The seeds can't be just scooped out and dried, they need to be removed with all the slimy tomato guts and left to ferment. A little gross factor and lots of fun makes this a great project to do with kids.
More information on this project at
Step 1: pick out the very best tomatoes for seeds that will make the very best tomatoes.
Step 2: scoop the guts into a jar. Fill with 1/4 cup water and leave to ferment in a warm place.
Step 3: rinse off the seeds, dry and store for next spring.

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Stephanie @ Garden Therapy

Want more details about this and other DIY projects? Check out my blog post!


Have a question about this project?

1 question
  • Ucc1938183
    on Apr 16, 2016

    How long do they ferment ?

    • Ella Syverson
      on Jun 28, 2018

      It will take about four to five days. I shake mine twice a day. When you see only seeds on the bottom rinse and dry.

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