How to Save Tomato Seeds

Some of you may still have the last of your tomatoes inside your house ripening. If you would like to save the seeds or if you don’t have any seeds but would like to learn how to save them for next year then read on. It’s a simple procedure where we must remove the gel from around the seeds before drying them.

But before that, the first thing to consider is if the tomato is a hybrid or an open pollinated (OP) or an heirloom tomato. Don’t save hybrid tomato seeds as they won’t grow out true meaning they will not grow out to be the same tomato. They revert to one parent or the other and are unstable so you won’t know what you’ll get. If you have open pollinated (OP) or heirloom tomatoes you can save the seeds as both will grow out into the same tomato. An exception to this might be if you plant cherry tomatoes close to the tomatoes whose seed you want to save. Cherry tomatoes could cross-pollinate with other tomatoes but most heirloom tomatoes do not cross with each other. Just grow your cherry tomatoes away from  your other ones.

Put tomato seeds in a small jar of water (viewed from the top)

Put tomato seeds in a small jar of water (viewed from the top)

First you want to save a tomato that is really ripe and soft. To save the seeds from tomatoes we must remove the gel from around the seeds. Cut the tomatoes open and squeeze the tomato with the gel and seeds into a jar and add about 2-3 inches of water. Cover the jar.

white mold grows on top of the water

white mold grows on top of the water

In a few days you will notice that there is a white mold growing on top of the water and most of the seeds will have sunk to the bottom of the jar. Don’t freak out, this white stuff is fermentation working on your seeds.

drain the tomatoes and stuff off

drain the tomatoes

After about 4 days, strain the tomato seeds in a fine sieve or strainer and wash the yuck and tomato stuff off of the seeds. If you wait too long the seeds will start to germinate which will ruin them.

Put your seeds on wax or parchment paper. Write down the variety.

Put your seeds on wax or parchment paper. Write down the variety.

The seeds can now be put on wax paper to dry. If you use paper towels, the seeds may stick to the paper causing trouble removing them. Be sure to label them so you remember which variety they are. After they are thoroughly dry, store them in a plastic bag or jar for next year. It’s fun to save seeds and see what happens next year.

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One comment on “How to Save Tomato Seeds

  1. BillMc says:

    Thank you for a great post. That’s just what I needed to know to start saving my own seeds.

    Like

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