The Basics of Seed Saving
Remember that only seeds from open pollinated (non hybrid) plants will
produce the same crop next year. And except for tomatoes, you need to be fairly
certain that the plants in question have not been cross pollinated by insects.
Such saved seeds might grow into something similar to the parents, or something
tough and tasteless. Tomatoes are self pollinating. So if you avoid hybrid
varieties you'll be able to grow the same tomato from seed saved from each plant
next year, even if different varieties were grown close together. Pepper and
eggplant flowers can be cross pollinated by insects, so different varieties of
these would have had to be separated by 75 metres for seed purity.
Cucurbits
Crops such as squash, cucumbers, gourds, pumpkins and melons need even more personal space. All of these garden favorites must be pollinated by insects, so unless close relatives (of the same species) have been separated by 750 metres or more, you'll get some kind of squash surprise if you grow seeds. Seeds of tomatoes, peppers, melons and winter squash are ready for saving when the fruits are ripe and ready to eat. Peppers are the easiest. The seeds are mature after the peppers have changed color to their final stage of ripeness. Cut the peppers open, scrape the seeds onto a plate, eat the pepper and let the seeds dry in a non humid, shaded place, testing them occasionally
until they break rather than bend.
Tomato
Harvest nicely ripe tomatoes from several different vines of the same variety, cut each across the middle and gently squeeze the juice and seeds into a bowl. You will note that each tomato seed is encased in a gelatinous coating. (this prevents the seed from sprouting inside the tomato.) Remove this coating by fermenting it. This mimics the
natural rotting of the fruit and has the added bonus of killing seed borne tomato
disease.
Eggplants
To save the seeds of eggplants, you'll need to wait until the fruits
are far past the stage when you'd pick them for kitchen purposes. Seeds saved
from table ready eggplants will be immature. Left on the plant, purple eggplant
varieties will ripen to a dull brownish color and will turn yellowish green, and white becomes golden. Eggplants ready for seed saving will be dull, off coloured and hard.
Cut the ripe eggplants in half and pull the flesh away from the seeded
areas. If you want to save more than a few seeds, a food processor comes in
handy to mash the flesh and expose the seeds.
Cucumbers
If you stop picking cucumbers their vines will stop producing new fruit, so pick your seed savers toward the end of the season.
After cucumbers ripen, they change colour and start to become mush.
Cut the ripe cucumber in half and scrape the seeds into a bowl. To remove
their slimy coating, rub them gently around the inside of a sieve while washing
them or soak them in water for 2-days. Rinse and dry.
You'll need to let your summer squash ripen past the tender stage, too.
When you can't dent the squash with a fingernail, it's ready to have its seed
saved. Pick it, cut it open, scrape the seeds into a bowl, wash, drain, dry and store.
Watermelons
After finishing off the tasty flesh, Put the seeds in a strainer and add a drop of dish washing liquid to remove any sugar and saliva left on the seeds. Dry and store.
So, why should you save your own seed?
If you raise and save your seeds, you are producing seed for your garden,
and, by careful selection over several generations of plants, you can produce
plants best suited to your climate and your gardening conditions. No one else
but you can do this. Flavour, pest and disease resistance, early bearing, and
size are among the many characteristics that can be enhanced by careful
selection over a period of years.