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Hoya Australis prefers bright indirect light. Brighter light will result in better color of the foliage but avoid direct sun which may burn the foliage.
The leaves of Hoya Australis are waxy and succulent, and it will tolerate minimum levels of watering. We recommend allowing the soil to nearly completely dry out between waterings. The number one sign of underwatering is drooping, wilted leaves. You can tell if you are overwatering by the leaves yellowing and falling off. Overwatering may eventually lead to root rot.
Hoya Australis are epiphytic vines, meaning that they grow on the branches of trees in nature. The roots of epiphytes typically need very well-draining soil to prevent root rot. Hoyas will typically be happy with average household humidity but added humidity is a plus. This plant should be fertilized monthly through the spring and summer with a diluted general houseplant fertilizer. Cuttings can be rooted in water or soil.