One beautiful farmers market tomato can become the beginning of next summer’s garden.

There is something especially wonderful about an August heirloom tomato.

Maybe it’s deep purple and slightly misshapen. Maybe it’s striped green and gold, sunset orange or the prettiest shade of pink. You slice into it at home, sprinkle it with a little salt and immediately wish tomato season could last forever.

What if you could save a little piece of it? You can.

Saving seeds from an heirloom tomato is a surprisingly simple way to carry this summer’s farmers market finds into next year’s garden. With a little preparation now, those tiny seeds tucked inside the tomato you brought home this August can be planted next season, beginning the whole delicious cycle again.

And we can’t think of a better little farmhouse ritual for the end of summer.

First, Choose a Tomato Worth Remembering

This might be the most enjoyable part.

Head to your farmers market and look for a beautiful, fully ripe heirloom tomato that you absolutely love.

Better yet, talk to the farmer who grew it.

Ask what variety it is and whether it’s an heirloom or open-pollinated tomato. These are the best choices for seed saving because their seeds are much more likely to grow plants with the same characteristics as the tomato you’re enjoying.

Hybrid tomatoes are different. Their seeds may certainly grow, but the resulting plant and fruit may not resemble the tomato you started with.

So ask questions.

What’s this variety called? Is it an heirloom? What does the farmer love about growing it?

That’s part of the beauty of shopping directly from the people who grow our food, there’s often a story and a wealth of knowledge sitting right behind the market table.

And don’t forget to write down the variety name. You’ll want it later.

Then, Eat the Tomato!

We’re certainly not sacrificing a beautiful heirloom tomato just for its seeds.

Slice most of it for dinner, perhaps even for our August Heirloom Tomato & Burrata Board and simply set aside a section containing plenty of seeds.

Now we’re ready to save them!

How to Save Your Heirloom Tomato Seeds

Tomato seeds have a slippery, gel-like coating around them. Rather than simply rinsing and drying the seeds immediately, we’ll use a short natural fermentation process to help remove that coating.

Don’t be intimidated by the word fermentation. Mother Nature does most of the work.

1. Scoop

Cut into your fully ripe tomato and scoop some of the seeds and surrounding gel into a small clean glass jar.

Add a small splash of water.

2. Let Nature Work

Leave the jar at room temperature and out of direct sunlight for approximately 2–5 days.

Give the mixture a gentle stir or swirl once or twice each day.

You may notice the mixture becoming cloudy, developing an unusual smell or even forming a little mold on top.

That’s okay. Fermentation is happening.

3. Find the Good Seeds

Once the mixture has fermented, add some fresh water and give it a swirl.

Healthy, mature seeds will generally settle toward the bottom while much of the pulp and less viable material floats above.

Carefully pour off the floating material and cloudy water without losing the seeds at the bottom.

Add fresh water and repeat until your seeds are nice and clean.

4. Dry, Dry, Dry

Pour the clean seeds into a fine-mesh strainer and remove as much water as possible.

Spread them in a single layer on a nonstick surface, screen, coffee filter or paper plate where air can circulate around them.

Allow the seeds to dry completely before storing them. This step matters because any moisture left behind can encourage mold during storage.

Separate any seeds that clump together as they dry.

Make a Tiny Seed Packet

Once completely dry, tuck your seeds into a small paper envelope and label it.

Write down:

Tomato variety
Where you found it or farmer’s name
August 2026

You might even add something personal:

“The incredible striped tomato from our August burrata board.”

Those little details are what turn seed saving into something more than gardening.

Tuck Them Away Until Next Season

Store your seed packet somewhere cool, dark and dry through fall and winter. (An index or recipe box works great for this. You can make dividers and label the seeds as well!)

And then comes the fun part.

Next year, when it’s time to begin your tomato plants for the growing season, pull out that little packet from August.

Inside is the possibility of an entirely new tomato plant,  all from something you discovered at the farmers market months earlier.

 

A Little Farmers Market Experiment

Here’s an idea we especially love:

Save seeds from more than one heirloom tomato this August.

Choose a purple one one week.

A striped variety the next.

Maybe a tiny heirloom cherry tomato after that.

Label each packet with the variety and the farmer who grew it.

By next spring, you’ll have created your own tiny farmers market tomato collection.

And if you’re new to gardening, don’t worry about making it perfect. Seed saving can be an experiment. Grow a few plants, see what happens and learn along the way.

From One Growing Season to the Next

Farmers markets have always connected us more closely to the seasons.

We get excited when the first tomatoes arrive. We savor them when they’re everywhere. And eventually, we say goodbye until next year.

Saving seeds gives us another way to participate in that rhythm.

One tomato becomes a handful of seeds.

Those seeds wait quietly through winter.

And next season, with a little soil, sunshine, water and patience, one of them just might become the tomato you’re slicing onto next summer’s table.

So before the last heirloom tomatoes of summer disappear, save a few seeds.

Sometimes the best way to hold onto a season is to plant a little piece of it again.