Aquilegia (common names: granny's bonnet, columbine) is a genus of about 60–70 species of perennial plants that are found in meadows, woodlands, and at higher altitudes throughout the Northern Hemisphere, known for the spurred petals of their flowers.
Columbine is a hardy perennial, which propagates by seed. It will grow to a height of 40–50 cm. It will grow in full sun; however, it prefers growing in partial shade and well drained soil, and is able to tolerate average soils and dry soil conditions. Columbine is rated at hardiness zone 3 in the United States so does not require mulching or protection in the winter.
Large numbers of hybrids are available for the garden, since the European A. vulgaris was hybridised with other European and North American varieties. Aquilegia species are very interfertile, and will self-sow. Some varieties are short-lived so are better treated as biennials.
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