Hoya merrillii Schltr.
Wax Plant, Porcelain Flower
Hoya merrillii is a lovely plant with glossy dark green leaves with a pretty pattern of veins and yellow flowers when mature. It is fragrant and a heavy bloomer during the warmer months. Once it starts blooming, the umbels will produce buds as soon as they are spent. Sometimes, there are even already young buds while other buds are still blooming.
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).
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 the plant's energy. They 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 those swimming around in a giant pot.
Propagate Hoyas by cuttings of top growth or by leaf cuttings. The average cutting or leaf start will produce a blooming plant in 2 years or less. The easiest method of propagation is by layering.
See more at How to Grow and Care for Hoya.
This species is native to the Philippines.
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