Biennial flowers are the perfect bridge between summer annuals and perennials. They offer growers, florists, and wholesalers a reliable product that blooms beautifully in its second year. With their robust growth, abundant blooms, and long vase life, biennials are a valuable addition to any professional assortment.
Most biennial flowers are sown in summer (June–July) so that they will grow strong into the winter and flower the following spring.
Most species can overwinter outdoors, perhaps with some light protection from frost. In colder regions, you can overwinter them in a greenhouse.
No, usually not. In the first year, they only form leaves and roots. Flowering occurs in the second year.
Popular varieties include violet, hollyhock, foxglove, sweet william, and forget-me-not. They are hardy, bloom profusely, and are popular in bouquets and borders.
Yes, many biennials such as hollyhock and forget-me-not sow themselves readily, meaning they can return annually without any additional sowing.
