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Seeds! |
We are now in the time of year that
I’m calling “harvest”- not because harvest doesn’t happen
before or after this time, but because much of our time is spent
harvesting crops. The summer fruits (like tomatoes and peppers) are
ripening with increasing frequency. In addition to edible crops,
we’re doing a lot of seed harvests. I’ve described a few
different methods of seed harvest and cleaning, but so far they have
all been seeds that require a
“dry” processing. I’ve now
learned about seeds that require a “wet” processing.
We use wet seed processing for our
tomatoes, melons, and cucumbers. These crops produce seeds that are
enclosed in gelatinous sacks; the seed must be released from the
flesh (using water- hence the term “wet”) in order for it be
cleaned and dried.
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Cucumber seeds in their casings |
The process for wet seeding at DBF
(with some recent photos) is basically as follows:
Step 1: Harvest crop at full
maturity.
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Green Apple cukes with mature seeds |
Step 2: Remove seeds (with attached
flesh) from the fruit. In melons and cucumbers, this involves
cutting them in half and using a spoon to scoop the seeds out. In
tomatoes, this involves smashing the tomatoes by hand to release the
seeds from the inside.
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Scooping seeds out of Rich Sweetness melons |
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Scooping seeds out of Green Apple cucumbers |
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We use a bat to smash Sun Gold tomatoes |
Step 3: Mix seed-pulp mixture with
water in a tall bucket.
Step 4: Let the seeds sit in the
juicy water. Over time, this mixture of flesh and water will ferment
and eat away at the gel casing surrounding the seeds. Tomatoes
ferment for a few days, while melons and cucumbers ferment for about
one day. Viable seeds will sink to the bottom of the bucket, while nonviable seeds will float to the top.
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Tomatoes get a crusty, moldy layer when fermenting (the fruit flies love it) |
Step 5: Pour the water, nonviable seeds, and other residue out of the bucket. When poured out properly, the viable seeds will remain at the bottom of the bucket and everything else will drain out. This process normally takes multiple pours, refilling the bucket with water each time.
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Cleaning tomato seeds |
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Pouring water & nonviable seeds out of seed bucket |
Step 6: Clean remaining seeds with
water and let them dry completely.
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Rinsing tomato seeds |
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DBF's seed drying racks |
Step 7: Package seeds for next
year's planting and for sending off to seed companies.
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Rich Sweetness melon seeds ready to send to the seed company |