Growli

Plant care

Hoya Sunrise (Sunrise hoya) care

Hoya 'Sunrise' (lacunosa x obscura)

Also called Hoya Sunrise, Sunrise hoya, wax plant 'Sunrise'.

USDA 10-11Pet-safeIndoor Vines reach roughly 1-2 m / 3-6 ft over time

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 colourLeaves stay plain green in low light; more bright indirect or gentle direct sun triggers the anthocyanin sun-stress flush.
  • Yellow or mushy leavesOverwatering or a dense, water-retentive mix causing root rot; let the soil dry more between waterings.
  • Shrivelled, soft leavesUnderwatering or chronically dry roots; give a thorough soak and drain.
  • No flowersPlant too young, too little light, or recently repotted; Hoyas bloom when mature and slightly pot-bound.
  • Removed flower spursNever cut the bare peduncle stubs left after blooming — new flowers form again from the same spur.
  • Mealybugs and spider mitesSap-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:

Related guides

Hoya Sunrise is also known as Hoya Sunrise, Sunrise hoya, and wax plant 'Sunrise'.