Biennial
A term applied to plants occupying two years in the development from seed to the maturation of seed; growing one year, flowering, fruiting, and dying the next. Seeds of Hardy Biennials are, as a rule, sown from June to August, to flower the succeeding season. Tender varieties are sown in a frame or cool house, and kept there all winter, being transferred from the frames or houses to the open border, in June. Wallflowers, Foxgloves, Canterbury Bells, and Sweet Williams, may be taken as fair types of Biennials, although they often assume more than a Biennial character on light sandy soils.