Heuchera Rancho Santa Ana hybrids
Compact evergreen clumps of roundish leaves with lobed or scalloped edges. A vast array are grown for their colorful foliage. Slender, wiry, 1–3-ft. stems bear loose clusters of nodding, bell-shaped flowers, typically 1/8 in. across or smaller. Dainty blossoms consist of colorful fused sepals and often lack petals; they are long lasting in cut arrangements. Color range includes shades of red to pink (attractive to hummingbirds) and less showy white or green. Bloom time varies by type from early spring to late summer; some kinds continue into fall.
Use in rock gardens or as groundcover, mass in borders or in front of shrubs, or use as edging for beds of taller perennials. They make good container plants, especially when combined with other perennials and even small shrubs.
Grow in well-drained, humus-rich soil. Will take full sun in cool climates, but in warmer regions they do best with afternoon shade or a northern exposure with open sky above. Divide clumps every 3 or 4 years in spring (or in fall in mild-winter climates). Use young, vigorous rooted divisions, or cut old woody stems to within an inch of the ground and let them regrow. Easy to propagate from cuttings started in sand in spring or from seed sown in spring. Strawberry root weevils chew on foliage, but these can be shaken off lifted plants. Mealybugs can damage base of plants; treat with insecticidal soap.
These hybrids between H. sanguinea and H. maxima are vigorous and free flowering. Foliage clumps grow to 1–2 ft. high and 2–4 ft. wide, with leaves up to 4 in. across. Stems 2–3 ft. high carry a profusion of small flowers. Long bloom season, from late spring through summer, nearly all year in mild-winter areas. ‘Genevieve’ has green leaves marbled with gray; deep pink, white-centered flowers. ‘Opal’ has medium green leaves and white flowers that open from pink buds. ‘Santa Ana Cardinal’ sports shiny dark green leaves and rose-pink flowers. Leaves of ‘Wendy’ are light green, pretty in combination with its medium pink flowers.
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