A biennial plant is a flowering plant that takes two years to complete its biological lifecycle. In the first year the plant grows leaves, stems, and roots, then it enters a period of dormancy over the colder months. Many biennials require a cold treatment, or vernalization, before they will flower. During the next spring or summer, the stem of the biennial plant elongates greatly. The plant then flowers, producing fruits and seeds before it finally dies. (There are far fewer biennials than either perennial plants or annual plants).

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Sweet William
A perennial variety which usually performs as an annual. The brilliant little flowers have fringed petals of red, pink, purple or violet. An ideal spring flower often blooming 60 to 90 days after planting under ideal environmental conditions. Sweet William prefers moist, well-drained soil in full sun. In areas having extremely hot summers, plant in partial shade for [...]