Calico plant (Alternanthera dentata 'Purple Knight') all-ter-NAN-ther-ah den-TAY-tah Genus:  Alternanthera This dark-leaved, tropical foliage plant loves heat, and is useful spreading through a bed, border, or in a container where its deep purple leaves can contrast with brightly colored flowers or foliage. Alternanthera are native to tropical and sub-tropical areas of Central and South America. Their flowers are generally an afterthought. This plant works well for edging, as an annual groundcover, or in a formal knot garden. Noteworthy Characteristics:  Purple-ruby foliage that is almost black. Performs well in high heat, where its color deepens and becomes richer. Easy to grow from seed. Care:  Plant out after the frost-free date in moist but well-drained soil in full sun (for best color) or partial shade. Pinch or clip back to maintain compact form. Propagation:  Sow seed at 55°  to 64°F as soon as ripe, or in spring (seedlings may vary in color). Divide in spring. Take cuttings in late summer. Problems:  Generally trouble-free, but spider mites and Fusarium wilt may be problems.

Overview

Height 1 ft. to 3 ft. Spread 1 ft. to 3 ft. Growth Habit Spreads Growth Pace Moderate Grower Light Full Sun to Part Shade Moisture Medium Moisture Maintenance Moderate Characteristics Showy Foliage Foliage Color Colorful/Burgundy Foliage Uses Beds and Borders, Container, Ground Covers Style Formal Garden Seasonal Interest Summer Interest Type Annuals