Hoya kerrii
The sweetheart hoya is a thick-leaved climbing epiphyte and lithophyte of lowland mainland Southeast Asia, first collected by A.F.G. Kerr at about 390 m on Doi Suthep near Chiang Mai. The measured climate at its wild sites is strongly monsoonal: hot, humid and wet from May to October, then a warm, sunny dry season with very little rain and noticeably cooler nights. Its succulent leaves store water for that dry season, so it wants bright light, a very free-draining mix, and to dry out between waterings.
Where it grows wild
A climbing vine to about 4 m that roots onto trees and rocks with aerial roots and twining stems. It is described as an epiphyte or lithophyte of tropical forest. Records cluster in Thailand, where the climate is seasonally dry and forests at the measured sites are open enough to let through a lot of light. Detailed published habitat notes for wild populations are scarce.
The type collection came from about 390 m on Doi Suthep. The few wild records with an elevation span 19–560 m (median about 130 m), so it is a lowland to low-hill plant.
🔒 Growing it like that
The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.