Hoya

Hoya belongs to Apocynaceae and is native from tropical and subtropical Asia to the western Pacific, including Australia. Many grow on trees; cultivated plants often climb or trail.

Climbing

— H. carnosa; thick, oval leaves

Trailing

— H. linearis; narrow leaves

General guidance for this genus. Individual species and cultivars can need different conditions.

Light

Bright, indirect; shade hot summer sun; avoid moving budded plants.

Water

H. carnosa: compost dry → water. H. bella: just moist in winter.

Temperature

Common indoor forms growing: 16–24°C. H. carnosa: winter ≥10°C.

Potting

Orchid bark : peat-free compost : coarse perlite = 1:1:1 by volume.

Flowers

H. carnosa: keep old flower spurs for repeat blooms.