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Botanical Name:
Solenostemon scutellarioides
sol-en-oh-STEM-on skoot-el-lar-ee-OY-deez
Common Name: Coleus, Flame nettle, Painted nettle
Synonyms: Coleus blumei var. verschaffeltii
Genus:
Solenostemon
The variously shaped leaves of these popular bedding plants typically combine several colors, such as chartreuse, rust red, cream, and purple-black. Some cultivars sport almost all of these colors combined. The darker the red in the leaf, the more sun the plant will tolerate.
Coleus are tender tropicals that are generally grown as annuals because they are hardy only in Zone 11. They are easy to grow, reliable plants known for their colorful foliage that comes in many color combinations and mixes well with other garden plants. Blue to white nettle-like flowers bloom in racemes in summer, but are not showy and tend to detract visually from the attractiveness of the plants.
Noteworthy characteristics:
Coleus may be overwintered indoors where not hardy. They have been popular since Victorian times or earlier. The leaves frequently feature mixtures of colors in irregular patterns.
Care:
Coleus like warm soils with decent drainage, and they are not happy in overly dry conditions. Grow in full sun to medium shade; their colors are most vivid in full sun. Half-day sun produces softer colors that are still very appealing. Plants grown in too much sun may wilt, and plants grown in too much shade may become leggy.
Propagation:
Sow seed on the soil's surface at 72° to 75°F in early spring. Root softwood cuttings from late spring to autumn.
Problems:
Mealybugs, scale insects, and whiteflies may be a problem under glass. No serious insect or disease problems.
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Photo/Illustration: Jennifer Benner