If you ask any gardener with a vegetable plot have they grown onions, nine times out of ten they will reply with a “yes”. Now that onion may have been a bulbing onion, a spring onion (scallion), or even at a stretch they will have grown garlic and made that link to the onion. However ask that same group of gardeners have they grown leeks, and you will be lucky to get one yes reply in ten.

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