Hoya australis is a wonderfully hardy, climbing, twining vine with lots of personality. They grow at a moderate pace and have some resistance to disease, pests, drought, and cold.
Watering: Water once the top few inches of soil dries out. Can tolerate drought, but won’t tolerate overwatering.
Soil: Naturally epiphytic, so demands a loose, well-draining potting mix. I prefer to use equal parts coco coir, perlite, and orchid bark, with about 10% worm castings to improve soil fertility.
Humidity: Keep humidity above 40%. More tolerant to lower humidity than some Hoyas.