Scientific Name
Kalanchoe × houghtonii D. B. Ward
Common Names
Alligator Plant, Houghton's Hybrid, Mother of Millions Hybrid, Mother of Thousands, Mother of Thousands 'Houghtonii', Mexican Hat Plant, Good Luck Plant, Devil's Backbone
Synonyms
Bryophyllum × houghtonii, Bryophyllum tubimontanum, Kalanchoe hybrida, Kalanchoe 'Hybrida', Kalanchoe 'Houghtonii'
Scientific Classification
Family: Crassulaceae
Subfamily: Sedoideae
Tribe: Kalanchoeae
Genus: Kalanchoe
Description
Kalanchoe × houghtonii is a monocarpic succulent with an erect, unbranched stem that grows up to 30 inches (75 cm) tall. Leaves are fleshy, boat-shaped with serrated margins. They are emerald green to brownish-green, usually with purple splotches beneath. Plantlets are produced at the margins of leaves. Fowers are red, orange, or yellow-pink, drooping, and up to 1.2 inches (3 cm) long.
Many succulent enthusiasts do not realize that this species is a different plant from its variegated form Kalanchoe 'Pink Butterflies', whose plantlets lack the chlorophyll needed for them to survive alone.
This succulent is often confused with Kalanchoe daigremontiana.
Etymology
The hybrid epithet "houghtonii" honors Arthur Duvernoix Houghton (1870- 1938), a medical doctor and a botanist specializing in cacti.
Hardiness
USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).
How to Grow and Care
Kalanchoe care is minimal but be cautious about light levels. Intense sunlight can burn the tips of the leaves. Place pots in partial sun to light shade areas when growing Kalanchoes.
The flowering varieties are highly rewarding for their colorful and long-lasting flowers. They prefer bright, sunny locations, especially in the growing season. Water moderately from fall to winter when the growth is most active. Reduce watering during the hottest summer months when the plants are mostly dormant and winter when the growth slows down significantly. Let the soil surface dry out between waterings. Watch the fleshy leaves for signs of water distress. An ordinary potting soil mix is fine. Feed bi-weekly during the growing season with a liquid fertilizer, or use slow-release pellets.
These small plants require repotting every few years. When repotting, take additional care in handling as the leaves are somewhat brittle and can snap easily. Clay pots work exceptionally well for planting Kalanchoes. Ensure pots can drain well, and saucers can empty easily.
Learn more at How to Grow and Care for Kalanchoe.
Origin
This succulent is a hybrid created in the 1930s in the United States by experimental crossings between Kalanchoe daigremontiana and Kalanchoe delagoensis (formerly known as Kalanchoe tubiflora), two species endemic to Madagascar. Thanks to its large colonizing capacity (mainly derived from the production of asexual plantlets), K. × houghtonii soon escaped from cultivation and quickly spread in many parts of the world.
Forms and Hybrids
Links
- Back to genus Kalanchoe
- Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
