Introduced to cultivation in 1637 by John Tradescant the Younger and named for him by Linnaeus, this dayflower family (Commelinaceae) genus of around 70 species of annuals and perennials from the Americas includes a few that, while attractive as garden plants, have become serious pests in some areas. Tuberous or fibrous rooted and often evergreen, they have rather succulent stems and fleshy, pointed elliptical, lance-shaped, or narrow leaves. Attractive variegated and colored foliage forms are common. Clusters of small 3-petalled flowers subtended by bracts appear over the warmer months and are sometimes very bright magenta, though white, soft pink, and blue to mauve color predominate.
CULTIVATION
Most species are tolerant of light to moderate frosts. Some prefer a sunny aspect and are drought tolerant, but most are happier with part-shade and moist well-drained soil. Propagate by division, from tip cuttings, or from seed, depending on the growth form.
Top Tip
Very hardy in mild climates, Tradescantia, or spiderwort, plants may need to be grown in a greenhouse in cooler areas. A general fertilizer can be of benefit in early spring.
CULTIVATION
Most species are tolerant of light to moderate frosts. Some prefer a sunny aspect and are drought tolerant, but most are happier with part-shade and moist well-drained soil. Propagate by division, from tip cuttings, or from seed, depending on the growth form.
Top Tip
Very hardy in mild climates, Tradescantia, or spiderwort, plants may need to be grown in a greenhouse in cooler areas. A general fertilizer can be of benefit in early spring.
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