Available 7th July 2022.
Hoya imperialis is part of the Apocynaceae family and its native range is Peninsula Thailand to W. & Central Malesia. It is a robust terrestrial to epiphytic climber, it is glabrous and branching with thick stems. Leaves are oblong and stiff with undulating leaf margins, there is a distinct midvein while the pinnate secondary venation is less obvious. Leaf base is acute, apex is cordate.
The bloom is positively geotropic (points downward), the umbel produces 3-12 flowers which are held by a persistent peduncle. Flowers are slightly cupped, 6-8cm in diameter but if the umbel only produces 3 flowers, they will be larger.
Genus name is new Latin, named after Thomas Hoy ( c. 1750– c. 1821), English gardener.. Specific epithet comes from the Latin meaning “of the empire or emperor.”
Hoya aren’t considered toxic, however, they may make your pet or child vomit if ingested, keep out of reach just to be safe.
For further information about Hoya, check out our blog.
Light: Bright indirect light, meaning the plant sees the sun for 0-4 hours per day - this could be through trees or a translucent curtain, it’s important for the plant to see the sky in order to thrive.
Water: Allow the majority of the mix to dry out as the mix is traditionally quite chunky, water will usually flow through quite easily. Be sure to thoroughly moisten the substrate.
Potting mix: A chunky well draining mix composed of coco coir, perlite or vermiculite, orchid bark, sphagnum moss and worm castings; you could also add some horticultural charcoal to this epiphytic mix. Alternatively, you can pot in a mix of coco chips and perlite.
Fertilising: Feed your plant every few waterings during the growing season or when you observe active growth. You can dilute fertiliser to half the recommended amount but never add more.
Temperature: 10-25˚C, keeping cooler in the evenings and in winter.
Humidity: Hoya prefer higher humidity, between 60-80% - they definitely grow better with higher humidity.