Echeveria

Echeveria is a large genus of rosette-forming leaf succulents in the family Crassulaceae, native to the semi-arid uplands of Mexico and, less commonly, Central America and northern South America. Named after the 18th-century Mexican botanical artist Atanasio Echeverría y Godoy, the genus is beloved by hobbyists for its neat, symmetrical rosettes, pastel and jewel-toned foliage, and a near-endless supply of hybrids — which, together with their easy-going nature, have made them among the most widely grown of all ornamental succulents. The common name hen and chicks is shared with several other rosette succulents such as Sempervivum.

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Description

Echeverias grow as compact rosettes of fleshy, spineless leaves arranged in a tight spiral. Leaf shape varies widely across the genus — from broad and spoon-shaped to slender and pointed — and the surface may be smooth and waxy, powdery with a protective bloom (a coating called farina), or softly velvety with fine hairs. Colour is the genus's great attraction: greens, blue-greys, lavenders, pinks, reds and near-blacks, often intensifying at the leaf tips or under bright light and cool nights.

Most species stay low and either remain solitary or slowly offset to form clusters; some develop a woody stem and become almost shrubby with age. The flowers are held on slender arching stalks that rise from between the leaves, carrying rows of small, bell- or urn-shaped blooms in warm shades of orange, red, pink or yellow. These are attractive to hummingbirds in habitat and are also the raw material of the genus's prolific hybridisation.

Distribution

The centre of diversity is Mexico, where the great majority of species occur, typically on rocky slopes, cliffs and canyon walls at moderate to high elevation. A smaller number range south through Central America and into the northern Andes of South America. In these habitats plants often grow in thin, gritty soil in bright, airy positions, rooting into rock crevices where drainage is sharp and rainfall is seasonal.

Notable species

Echeveria elegans — the "Mexican snowball", tight pale blue-green rosettes; a classic beginner's plant.
Echeveria agavoides — firm, sharply pointed leaves often edged in red ("lipstick" forms are widely grown).
Echeveria setosa — densely covered in fine white hairs, giving a fuzzy appearance.
Echeveria pulvinata — velvety, hairy leaves that flush red at the margins ("ruby" and "frosty" forms).
Echeveria laui — heavily powdered pastel rosettes; slow, prized, and sensitive to handling.
Echeveria gibbiflora — large, robust species behind many big showy hybrids.

Cultivation

Echeverias are among the most forgiving succulents to grow, provided two things are respected: plenty of light and sharp drainage. Grow them in a free-draining, mostly mineral mix and give them the brightest position you can — a sunny windowsill or protected outdoor spot. Good light keeps the rosettes tight, compact and richly coloured; too little light causes them to stretch and pale (see Common problems below). In hot climates a little shade from the fiercest afternoon sun helps prevent scorching, especially on powdery blue and pastel types.

Water thoroughly when the soil has dried out, then let it dry again before the next drink; err on the dry side, as standing wet is the main cause of rot. Water at the base rather than over the rosette where practical, since water trapped in the crown — and rubbed-off farina from handling — can spoil the plant's appearance or invite rot. Most species are frost-tender and are best kept above freezing; they grow most actively in the milder parts of the year and rest during extreme heat or cold. See Watering and Repotting for general technique.

Propagation

Echeverias are famously easy to multiply, which is a large part of their popularity. Many form offsets ("chicks") around the base that can be separated and rooted — see Propagation — offsets. A great many species and hybrids also root readily from a single healthy leaf: a leaf removed cleanly and left to callus will often produce a tiny rosette and roots at its base. Beheading a stretched or leggy plant and re-rooting the rosette is another common technique, and the bare stem left behind will frequently sprout new offsets. See Propagation — cuttings for method. Species come true from seed, though hybrids do not, so named plants are almost always increased vegetatively.

Hybrids and cultivars

Few succulent genera have been hybridised as enthusiastically as Echeveria. Breeders have crossed species with one another — and with related crassulad genera such as Graptopetalum, Sedum and Pachyphytum to create intergeneric hybrids (×Graptoveria, ×Sedeveria, ×Pachyveria and others) — producing thousands of named cultivars in every conceivable colour and form. Popular examples include ruffled and crinkle-edged types, deep near-black rosettes, and heavily powdered pastels. Crested and variegated forms also appear and are prized by collectors; as with many succulents, these unusual growth forms are often slower and more demanding of good light and careful watering than typical plants. Because cultivar names in this genus are notoriously muddled in the trade, plants are best trusted by appearance rather than label.

Common problems

Etiolation — insufficient light is the most common complaint; the rosette stretches, the stem elongates and the tidy shape is lost. More light prevents it; a stretched plant can be beheaded and re-rooted.
Rot — from overwatering, a slow-draining mix, or water sitting in the crown; the plant softens and collapses from the base or centre.
Loss of farina — the powdery bloom on many species is easily rubbed off by handling and does not regrow on that leaf; handle by the base and avoid touching the leaves.
Pests — mealybugs (white fluff tucked between the leaves and in the crown) are the usual pests, with aphids often clustering on flower stalks and root mealybugs sometimes lurking below. See Pests and diseases.
Sunburn — plants moved abruptly into strong sun, or powdery types in fierce heat, may develop scorched patches; acclimatise gradually.

References

Horticultural information for growing these plants as ornamentals. Always confirm plant identification and any handling, grafting, or safety advice against authoritative sources before acting.