For some people, strawberries are the ultimate symbol of summer. Their bright red color and their juicy, sweet flavor seem to capture everything that is good about a summer day and wrap it up in a single red berry. The strawberry is the only fruit in the world that has its seeds on the outside. A standard strawberry has approximately 200 seeds.
Pick or purchase strawberries that are ripe or overripe. Strawberries that are slightly mushy because of over-ripeness are the best.
Place the strawberries into a fine-mesh kitchen strainer and gently press the berries through with your thumb and fingers. Do not press too hard. The idea is to force the pulp through the strainer but leave the seeds behind--pressing too hard could force the seeds through the strainer as well.
Hold the strainer under the faucet and run water through it, washing more of the pulp away until only the strawberry seeds are left.
Dump the seeds only a ceramic plate and use your fingers to separate the seeds until they are lying on the plate without any seeds touching any other. Leave the seeds in a protected place for two days until they have dried.
Carefully turn the seeds over one by one to make certain they are completely dry. If any are still wet, allow them more time to air dry.
Scrape the dry seeds into a zip-lock baggie and seal it after forcing most of the air out of the bag. Store the seeds in the vegetable crisper of your refrigerator until you are ready to plant. Plant seeds once all possibility of frost has passed.