Answer: First of all, you should realize that seeds from your current crop may or may not produce similar plants; this would depend on the variety you are growing and whether or not it is an open pollinated variety.
Here's an easy way to save tomato seeds: take a really
ripe tomato, cut it in half, and scoop out the seeds (there will
be a gooey glob surrounding each seed). Don't take any
tomato pulp, just the seeds and the surrounding gelatine-like
material. Then spread a teaspoonful of seeds on an index
card. The gelataneous mass will help them stick to the card.
Keep spreading on cards until you run out of seeds. Lay the
cards out on a table or counter until the seeds dry. (They'll
stick like glue to the cards!) Once you're sure the seeds are
thoroughly dry (peel one off the card to make sure), then
put all the cards in a jar with a tight fitting lid or zipper plastic bag, close it tight,
and store it in a cool, dark location ( a refrigerator works well). Next spring your seeds
will be ready to plant.
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