The life cycle of biennial plants is completed over two growing seasons. During the first season, they produce only leaves. Following a winter cold period, they flower in the second growing season, produce seeds, and then die. Popular biennials includeDigitalis(foxglove) andOenothera(evening primrose). Care is basically the same as for annuals, except that the plants are alive for two growing seasons so you'll want to ensure to not till the soil.