Hoya (carnosa x pubicalyx)

Hoya (carnosa x pubicalyx) is a horticultural hybrid sold under this commercial formula. Its parentage retains the two accepted species: Hoya carnosa and Hoya pubicalyx. In cultivation, the plant combines characteristics from both: the same vine may produce both broader, carnosa-type leaves and more elongated leaves with the distinctive venation of pubicalyx. It has a vigorous vining habit and may flower even while still small. The flowers appear in large umbels, usually dark pink to burgundy, with variable shades.

Foliage and growth. The foliage is mixed on the same plant. Some leaves are broader and thicker, resembling H. carnosa; others are narrower, with more prominent veins, resembling H. pubicalyx. The proportion of the two types varies from one stem to another. The plant has a vining habit; it can be trained onto a support or allowed to trail. Growth is horticulturally described as vigorous.

Flowers and fragrance. Under good growing conditions, it produces large umbels with star-shaped flowers in shades of dark pink, burgundy, or, more rarely, lighter colors. The color may vary between blooms and depending on growing conditions. The flowers are fragrant. A duration of approximately 7 days is an SG cultivation observation, not a botanical rule. Flowering is not guaranteed.

Identity and commercial parentage. The product retains the commercial formula Hoya (carnosa x pubicalyx). Hoya carnosa (L.f.) R.Br. is an accepted species, native from southern China to Laos and from southern Japan to Taiwan. Hoya pubicalyx Merr. is an accepted species, native to the Philippines (Luzon). The origin in gardens in Thailand remains a commercial note, not a published hybrid origin.

Substrate: use an airy, well-draining mix suitable for epiphytic species. We recommend the professional substrate for Hoya and Anthurium - SG Mix.

For complete recommendations on light, watering, substrate, fertilization, propagation, and flowering, read the complete Hoya care guide.