Hoya australis is a vigorous, evergreen climbing vine known for its glossy, thick, ovate leaves and clusters of fragrant, star-shaped flowers. The flowers typically emerge in umbels and range from creamy white to pale pink, often with a slightly waxy texture that gives them a porcelain-like appearance. Its trailing or climbing stems can attach to supports with aerial roots, making it an excellent choice for hanging baskets or trellises. The plant exudes a tropical charm and can bloom multiple times per year under optimal conditions, producing sweetly scented flowers that attract pollinators.
- Size: Vines can grow 6–10 feet (1.8–3 m). Leaves are 2–4 inches (5–10 cm) long, thick and succulent-like. Flower umbels are 1–2 inches (2.5–5 cm) in diameter.
- Light: Bright, indirect sunlight; tolerates some morning sun but avoid harsh afternoon sun.
- Water: Allow soil to dry out between waterings; overwatering can cause root rot.
- Soil: Well-draining potting mix, ideally with orchid bark or perlite to improve drainage.
- Temperature: Prefers 60–85°F (15–29°C); sensitive to frost.
- Humidity: Moderate to high humidity enhances growth and flowering.
- Fertilizer: Feed monthly during the growing season with a balanced, water-soluble fertilizer.
- Pruning: Trim to control shape and encourage fuller growth; remove dead or yellowing leaves.
- Propagation: Easily propagated via stem cuttings, preferably with aerial roots attached.