Say “Seeeeeeeds!”… Time for Seed Harvesting

Call it the “after thought harvest”… seed harvesting is not something that you might do or even think about if you are a newbie (or even seasoned) veggie grower. But if you don’t like forking out $3.50 a pack for organic seeds, then I suggest you give some thought, and a tiny bit of energy, to harvesting some seeds from your own crops to plant next year.

Dried arugula seeds and pods (2012 harvest)

Dried arugula seeds and pods (2012 harvest)

Of course each crop variety has a slightly different method for harvesting its seeds. In the case of “fruiting” crops, such as tomatoes, peppers, cucumbers, zucchini and pumpkins, the seeds are inside of the fruit, so must therefore be harvested from a picked fruit. I will leave those to a separate blog post later in the season… for now, let’s consider legumes and leafy crops, since that is what we’re harvesting right now.

Legumes (i.e. beans and peas) are the absolute simplest seed to harvest. Just allow a few of your pea and bean pods to fully mature and dry out on the vine. Harvest only after the pods are fully dried. A word of caution – don’t allow too many beans to fully mature off the bat or you will reduce the output of your plants. In the case of beans and peas, the more you pick, the more they produce! So wait until the plants are getting close to the end of their productive life before allowing pods to fully mature for seed harvesting. We have had excellent results with all peas and beans to date!

Dried pea pod on the vine.

Dried pea pod on the vine.

Harvested dried peas (2013 harvest)

Harvested dried peas (2013 harvest)

In the case of leafy crops the concept is simple – allow some of each crop to bolt, flower and go to seed, then allow the seeds to dry on the live plant before harvesting. I really cannot stress enough the importance of allowing the seed pods to dry fully on the plant before harvesting. If harvested too soon, the seeds may not be viable, or they may be difficult to store without rotting. This takes patience! For the last month we have been annoyingly stepping around a tangle of bolted cilantro to water our swiss chard, biding our time til the seeds are fully dried and ready to harvest… all for the love of sweet, sweet crushed coriander seed. (In the case of coriander, we save a few seeds for planting, but we use it religiously in all sorts of cooking.)

Cilantro (coriander) seeds... almost dry!

Cilantro (coriander) seeds… almost dry!

Over the last few years, we have had really good results harvesting seeds from the following leafy crops: all lettuces (… and did you know that lettuce plants have beautiful yellow flowers when they bolt?); spinach; arugula; dill; cilantro; and basil.

Once you have harvested the dried seed pods from the plant, release the individual seeds by rolling the pods between your thumb and fingers, gently crushing the dried pod. Place your harvested seeds in paper envelopes; I would advice against plastic since trapped humidity can make your seeds rot. Label, and store for next year in a cool, dry place. If you’re feeling particularly crafty, make yourself a cute seed box to keep them all in …

Say Seeeeds!

Say Seeeeds!

FYI, to date, we have not had any success harvesting seeds from kale, although recently I started chatting with a man on an airplane who turned out to run a small cooperative farm. He said that you can totally harvest kale seeds, and that they are good for eating as a nutrient-packed sprouted seed! We are definitely going to try this in the fall… will keep you posted on that one.