For a little fun, harvest some leeks or scallions by cutting them off at the soil line, leaving roots in the ground. These are cold-hardy plants, so leave the roots to over-winter — but mulch deeply with leaves or straw to keep your soil from freezing. Come spring, you should get a new crop from the same roots, which means you don’t have to buy new plants. Heh.
It’s the garden version of a woodsman trick called “coppicing,” whereby you take down a tree for cordwood or whatever, but leave the roots intact. They’ll send up new shoots, and you cut all but one or two off. These will grow at light speed because of the healthy roots below.
Small leeks can also be mulched and over-wintered for a fresh crop of beautiful leeks in spring, when nobody else has them. Keeps you out of the grocery store….