Biennial Plants are those, of only two years duration. Several vegetables are of this tribe : being-raised from seed, they generally attain perfection the first year ; and in the following spring, or summer, they produce their flowers and seeds, and soon afterwards decay.

Biennials consist of esculents, and flower-plants. The former include the. cabbage, savoy, carrot, parsnip, beet, onion, leek, etc: and the latter, ' the Canterbury bell, French honey-suckle, wall-flower, stock July-flower, Sweet-William, China-pink, common-pink, carnation, scabious, holly-hock, tree-mallow, vervain-mallow, tree-primrose, honesty, or moonwort, etc.; all of which, if sown in March, April, or May, rise the same year, and in the following, shoot up into stalks, flower, and produce perfect seeds in autumn. Though most of the biennials dwindle in the third year, a few of them, particularly holly-hocks, wall-flowers, carnations, and pinks, produce flowers which, however, are generally small, and of faint colours. Hence it is necessary to raise an annual supply from seed; though the three last mentioned plants may be propagated by slips and lavers.