I've had a bit of success over last year or so in saving my own seed. For example with leeks you can get loads of free seeds by just letting two or three plants mature, with the added bonus of summer flowers. If you're interested click the link below for the simple guide I've knocked up. Hope it helps.
Allotment Heaven: Saving your own vegetable seeds
Regards, John
Allotment Heaven: Saving your own vegetable seeds
Regards, John
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