Photo: Samuel FrankelCC BY 4.0via iNaturalistresized / cropped
Hoya Australis Plant Care
Hoya australis R.Br. ex J.Traill
Updated · Sources · How we source care data
Hoya australis, commonly known as waxflower or common hoya, is a species of flowering plant in the Apocynaceae or dogbane family and is native to northern and eastern Australia, Papuasia and Melanesia. It is a succulent vine or subshrub with fleshy or leathery, elliptic, oblong, egg-shaped or more or less round leaves, racemes of fleshy, cream-coloured and red flowers, and spindle-shaped follicles.
Every 7–14 days
Bright indirect light
60–80°F
50–70%
At a glance
How do you care for Hoya Australis?
Water Hoya Australis every 7–14 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 60–80°F (16–27°C) and 50–70% humidity. Fertilize it every 4 months during the growing season.
Where Is the Hoya Australis Native To?
What Is the Hoya Australis?
Hoya Australis (Hoya australis) belongs to the Apocynaceae family within the Hoya genus. Hoya Australis is native to northern and eastern Australia, Papuasia and Melanesia. Hoya Australis is also known as Wax Plant.
Hoya Australis displays a vining, trailing growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Hoya Australis produces waxy star-shaped clusters of flowers in various colors like pink, red, white, and yellow.
Leaf size: approximately 4 inches.
How Often Should You Water a Hoya Australis?
Hoya australis requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Hoya Australis Need?
Hoya Australis thrives in bright indirect light. Avoid placing Hoya Australis in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Temperature and Humidity Does the Hoya Australis Prefer?
Hoya australis grows best at temperatures of 60–80°F. Hoya Australis prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–80°F
Humidity
50–70%
What Soil Mix Works Best for a Hoya Australis?
Well-draining, aerated soil mix with high organic content like orchid bark, perlite, and peat moss. Good drainage is essential for Hoya Australis to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Hoya Australis?
Feed Hoya Australis every 4 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 4 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Hoya Australis?
Repot every 1-2 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Hoya Australis?
Hoya Australis can be propagated through stem cuttings, leaf cuttings, layering. Similar propagation techniques also apply to hoya bella plant care, which shares the same genus.
Is the Hoya Australis Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Hoya Australis, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Hoya Australis?
Hoya Australis is susceptible to mealybugs, spider mites, aphids. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Hoya Australis Need?
Hoya Australis grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Hoya Australis is native to northern and eastern Australia, Papuasia and Melanesia. In cooler regions, grow Hoya Australis as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 10b – 12b
Keep exploring plants
Hoya Australis is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Hoya genus — compare its care with other Hoya species on PlantoScan.
Hoya is part of the Apocynaceae plant family — browse all Apocynaceae genera and species.
Hoya Australis thrives in bright light and direct sun — see other bright-light plants.
More Hoya Species
Other Hoya species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Hoya australis R.Br. ex J.Traill, family Apocynaceae (first published in Trans. Hort. Soc. London 7: 28 (1830)) — World Flora Online record, IPNI name record, Wikidata.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Hoya Australis, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Samuel Frankel, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 10b – 12b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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