How to Save Seeds from Biennial Plants

Take your seed-saving know-how to the next level by learning how to keep seeds from open-pollinated biennials, including beets and Swiss chard.

Those who grow broccoli and cauliflower without saving the seeds will still benefit from understanding vernalization. For these plants to produce their flower heads (which are what we eat in immature form), they need to be exposed to a certain amount of cool weather to induce flowering. Most of these crops typically need 1 to 4 weeks of cumulative temperatures below 50 degrees after they’ve reached sexual maturity.
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