Hoya kerrii Craib
Sweetheart Hoya, Sweetheart Plant, Valentine Hoya, Porcelain Flower, Heart Leaf, Lucky Hearts, Wax Hearts, Wax Plant
Hoya obovata var. kerrii
Hoya kerrii is a slow-growing semi-succulent plant with perfectly heart-shaped bright green leaves that emerge on vining, up to 13 feet (4 m) long stems. The leaves are up to 4 inches (10 cm) long, up to 3 inches (7.5 cm) wide, and up 0.2 inches (0.5 cm) thick. Flowers are small, star-shaped, and creamy-white with pink to rose-purple centers. They appear in clusters along the stems. The plant is most commonly sold only as a single-rooted leaf around Valentine's Day.
USDA hardiness zones 11a to 11b: from 40 °F (+4.4 °C) to 50 °F (+10 °C).
How to Grow and Care
Hoyas don't ask for much beyond the well-draining soil and the warm, humid conditions that many tropical flowers crave. They don't like wet feet or heavy soil, and as many grow as epiphytes in nature. Give them at least a half-day of sunshine and bring them indoors when temperatures drop below 50 °F (10 °C).
When your Hoya finishes blooming, leave the flower stalk, as it may produce new flowers. Removing the stalk forces the plant to produce a new stalk, which delays blooming and wastes its energy. These plants are light feeders, and a monthly drink of compost tea or dilute fish emulsion provides all the nutrition these tropicals need. Hoyas like the security of a snug pot and plants that are a bit root bound will flower more prolifically than swimming around in a giant pot.
Propagate Hoyas by cuttings of top growth or by leaf cuttings. The average cutting or leaf will produce a blooming plant in 2 years or less. The easiest method of propagation is by layering.
Learn more at How to Grow and Care for Hoya.
Hoya kerrii is native to southeast Asia.
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