Divide the roots in the spring or autumn, leaving a few small roots together in each slip, and plant at intervals at about 6 in. If raising from seed, sow in drills 1 ft. apart and thin out to 4. in. between each. They multiply quickly from offsets, thrive in any soil and come up year after year. The tapering leaves are used in salad, being of a mild onion flavour.

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