Species · genus Hoya · Apocynaceae

Heart Hoya

Hoya kerrii Craib

Growth habit

climbing epiphyte or lithophyte

Native range

Cambodia, Jawa, Laos, Malaya, Thailand, Vietnam

Reference · H. kerrii

Cultivars of H. kerrii

The named forms growers keep — each with its own page, each honest about how much we know.

No named cultivars catalogued under H. kerrii yet. When growers document a stable, named form, it earns its own page here.

Guide

The species-level account. Cultivar pages build on this and say where they differ.

A climbing epiphyte and lithophyte from Southeast Asia, Hoya kerrii grips bark and rock rather than sitting in heavy soil, so it drains fast and stores water in its thick, succulent leaves. Give it a chunky, free-draining mix and bright indirect light, and water only when the mix has dried out nearly throughout — when the leaves feel slightly less firm and the top of the mix is dry well below the surface. It tolerates ordinary household humidity and rots if kept continuously wet.

Care recipe

The species record — the baseline every cultivar inherits unless it says otherwise.

Care notes are early — not yet verified

Light: ai:claude-opus-4-8
Water: ai:claude-opus-4-8 (range 10-21d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Bright, indirect

Water

≈ every 21 days

Humidity

Medium

Temperature

16–29 °C

Soil mix

Chunky, free-draining succulent or cactus mix

Propagation

Leaf or stem cuttings; single leaves root but seldom vine

Fertilizing

Dilute feed every 4-6 weeks while growing

Growth rate

Slow

Flowering

Rarely flowers, especially single-leaf plantings

ToxicityAuthoritative · species

Toxic to cats & dogs & humans

Family Apocynaceae is associated with cardiac glycosides and milky latex that can be irritant or toxic. This is where toxicity lives: every cultivar of this species inherits it and none can override it.

Reference images

Every image credited. Licenses link to their deeds.

No reference gallery yet

A few clear photos — habit, a mature leaf, a flower if it blooms — would give this page its eyes.

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Sources: ai:claude-opus-4-8 · ai:claude-opus-4-8 (range 10-21d) · ai:claude-fable-5 · ai:claude-opus-4-8 (family inference)

Kept true by its growers

Every fact here carries its source. Grow Heart Hoya yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — is exactly what keeps this page honest. Contributions are reviewed before anything changes.