Plant care
Hoya Sunrise (Sunrise hoya) care
Hoya 'Sunrise' (lacunosa x obscura)
Also called Hoya Sunrise, Sunrise hoya, wax plant 'Sunrise'.
Watering rhythm
7-14days
When the top of the mix is dry, roughly every 7-14 days
Light
Bright indirect light (just back from a sunny window)
Soil
Loose, free-draining chunky mix
Humidity
40-60%
Temp
16-29°C
Pet safety
Pet-safe
Mature size
Vines reach roughly 1-2 m / 3-6 ft over time
Care at a glance
Light
Hoya Sunrise is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Bright indirect light keeps it healthy; a few hours of direct morning sun (or gradually increased light over 2-3 weeks) brings out the red sun-stress colour and stronger veining. Tolerates more direct light than most Hoyas without scorching, but acclimatise to avoid bleaching. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.
Watering
Water hoya sunrise when the top of the mix is dry, roughly every 7-14 days. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. The thick succulent leaves store water, so let the top 2-3cm dry out before watering and drain fully. Overwatering and soggy roots cause far more deaths than drought; ease off in winter.
Soil and pot
Hoya Sunrise grows best in loose, free-draining chunky mix. An airy epiphyte blend of orchid bark, perlite and a little coco coir or compost. Avoid dense, water-retentive potting soil. Hoyas flower better slightly pot-bound, so repot infrequently. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.
Humidity and temperature
Hoya Sunrise sits happiest at around 40-60% humidity and 16-29°C (60-85°F). Copes with average household humidity but grows faster and blooms better above 60%. Raise humidity with a humidifier or pebble tray if air is very dry. If you keep the room above 16 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.
Fertilising
Feed hoya sunrise sparingly. Feed with a balanced houseplant fertiliser at half strength monthly through spring and summer; a higher-potash feed supports flowering. Stop feeding in autumn and winter. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.
Common problems
Below are the issues we see most often on hoya sunrise in the Growli community. Each is annotated with the most common cause so you know where to start.
- No red colour — Leaves stay plain green in low light; more bright indirect or gentle direct sun triggers the anthocyanin sun-stress flush.
- Yellow or mushy leaves — Overwatering or a dense, water-retentive mix causing root rot; let the soil dry more between waterings.
- Shrivelled, soft leaves — Underwatering or chronically dry roots; give a thorough soak and drain.
- No flowers — Plant too young, too little light, or recently repotted; Hoyas bloom when mature and slightly pot-bound.
- Removed flower spurs — Never cut the bare peduncle stubs left after blooming — new flowers form again from the same spur.
- Mealybugs and spider mites — Sap-suckers hide in leaf joints, especially in dry air; wipe with diluted alcohol and raise humidity.
Propagation
Take a stem cutting with 2-3 leaves and at least one or two nodes; root in water, damp sphagnum moss, or a light mix in 4-6 weeks, ideally in a humid propagation box. Pot on once roots are a few centimetres long. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.
Toxicity to pets
Hoya Sunrise is pet-safe. This hybrid is not individually listed by the ASPCA, but the Hoya genus is clean: ASPCA-listed members wax plant (Hoya carnosa) and sweetheart hoya (Hoya kerrii) are both non-toxic to cats, dogs and horses, with no toxic Hoya entries, and both parents (lacunosa, obscura) are Hoyas. Generally considered pet-safe; verify with your vet if your pet ingests any plant. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).
Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.
Hoya Sunrise care — frequently asked questions
What is the common name for Hoya 'Sunrise' (lacunosa x obscura)?
Hoya 'Sunrise' (lacunosa x obscura) is most commonly called Hoya Sunrise, but it is also known as Hoya Sunrise, Sunrise hoya, wax plant 'Sunrise'. The names refer to the same species, so care instructions for Hoya Sunrise apply identically to anything sold as Sunrise hoya.
How much light does hoya sunrise need?
Hoya Sunrise grows best in bright indirect light (just back from a sunny window). Bright indirect light keeps it healthy; a few hours of direct morning sun (or gradually increased light over 2-3 weeks) brings out the red sun-stress colour and stronger veining. Tolerates more direct light than most Hoyas without scorching, but acclimatise to avoid bleaching.
How often should I water hoya sunrise?
Water hoya sunrise when the top of the mix is dry, roughly every 7-14 days. The thick succulent leaves store water, so let the top 2-3cm dry out before watering and drain fully. Overwatering and soggy roots cause far more deaths than drought; ease off in winter. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is hoya sunrise toxic to cats and dogs?
Hoya Sunrise is pet-safe. This hybrid is not individually listed by the ASPCA, but the Hoya genus is clean: ASPCA-listed members wax plant (Hoya carnosa) and sweetheart hoya (Hoya kerrii) are both non-toxic to cats, dogs and horses, with no toxic Hoya entries, and both parents (lacunosa, obscura) are Hoyas. Generally considered pet-safe; verify with your vet if your pet ingests any plant.
What USDA hardiness zone does hoya sunrise grow in?
Hoya Sunrise is rated for USDA zone 10-11 (grown indoors in most US and UK homes). Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
Hoya Sunrise deep-dive guides
Every aspect of hoya sunrise care, each with its own calibrated guide:
- Hoya Sunrise watering schedule
- Hoya Sunrise light requirements
- Best soil mix for hoya sunrise
- Hoya Sunrise fertilizing guide
- When to repot hoya sunrise
- How to propagate hoya sunrise
- Hoya Sunrise growth rate & size
- Hoya Sunrise cold hardiness
- Hoya Sunrise temperature & humidity
- Is hoya sunrise toxic to cats & dogs?
Related guides
Hoya Sunrise is also known as Hoya Sunrise, Sunrise hoya, and wax plant 'Sunrise'.