Hoya Linussi 6383

🌿 Hoya linusii (formally described in 2014 by Anthony Lamb, Olivia Gavrus, and Fidilis Emoi, and taxonomically recognized as a heterotypic synonym of Hoya phyllura) is a magnificent, climbing epiphytic wax vine belonging to the dogbane family, Apocynaceae. It is native to the island of Borneo, where it is found in the Crocker Range and montane rainforests of Sabah, Malaysia, as well as adjacent regions of Kalimantan, Indonesia. In its native tropical rainforest canopy, it grows as a climbing epiphyte among mossy branches, thriving under humid, warm, and dappled light conditions. It is a prized, collector-level houseplant, highly treasured by hoya enthusiasts for its large, sculptural foliage, vigorous climbing habit, and warm apricot-orange floral umbels.
FUN FACT
Taxonomic documentation notes that Hoya phyllura is endemic to Borneo, and originally was a poorly known species from Kalimantan with yellow flowers.
FOLIAGE AND GROWTH HABIT
Hoya linusii exhibits a robust, vigorous climbing growth habit, producing stout, flexible, cylindrical grey-green vines that rapidly twine around vertical supports using adventitious climbing roots. In indoor culture, vines can easily extend 1.5 to 3 metres in length, quickly covering trellises or moss poles. The leaves are arranged oppositely along the stems on stout, grooved petioles measuring 1 to 2.5 centimetres in length. Individual leaf blades are large, leathery, and broadly elliptic to ovate-lanceolate in outline, measuring 8 to 16 centimetres in length and 4 to 8 centimetres in width. The leaf blade features an acute apex, rounded to cuneate base, and slightly revolute margins. The upper foliar surface is smooth, waxy, and rich olive-green, traversed by prominent, slightly darker primary veins, and occasionally decorated with delicate silvery flecks. The underside is paler green, smooth, and firm to the touch.
FLOWER DETAILS
Flowering takes place from late spring through autumn on mature, sun-ripened vines. The inflorescence is a flat to slightly convex, spreading umbel borne on a sturdy, persistent peduncle measuring 3 to 6 centimetres in length, carrying 20 to 35 tightly packed blossoms. Each star-shaped flower measures approximately 1.5 centimetres across. The corolla is reflexed, smooth to finely pubescent, and displays warm buttercup-yellow to rich apricot-orange hues—the distinctive trait that initially inspired its separation from other Bornean hoyas. The central star-like corona is creamy-white to pale ivory with subtle yellow-orange centers. The flowers open during the evening hours and remain fresh for 5 to 8 days, exuding a sweet, honey-like nocturnal perfume. The perennial peduncles should never be removed after flowering, as they will generate fresh flower buds year after year.
CARE INSTRUCTIONS
🌞 Light: Prefers bright indirect light with 2 to 4 hours of gentle morning or late-afternoon direct sunlight. Strong light stimulates fast vine extension, preserves rich leaf coloration, and encourages frequent peduncle formation.
💧 Water: Water thoroughly using the soak-and-dry method whenever the top 50% of the chunky potting substrate has dried out. In active spring and summer, regular weekly watering is appreciated; reduce watering frequency during late autumn and winter.
🌡️ Humidity: Thrives in moderate to elevated ambient humidity between 55% and 75%. It adapts well to average home environments if placed away from dry heat sources, though higher humidity accelerates leaf emergence and peduncle health.
🪴 Soil: Requires a coarse, highly aerated, free-draining epiphytic mix formulated with 50% medium orchid bark, 25% coarse perlite, 15% pumice or lava rock, and 10% coco husk chips to ensure rapid drainage and root oxygenation.
🏺 Potting: Best potted in a sturdy plastic container or ceramic pot with ample drainage holes, fitted with a strong bamboo ladder, trellis, or moss pole to support its vigorous climbing vines.
🌱 Growth rate: Fast grower during warm, humid weather, rapidly throwing out long exploratory runner vines that quickly leafy out and establish flowering spurs.
👩‍🌾 Fertilizing: Feed every 2 to 3 weeks from April through September with a balanced, water-soluble tropical plant fertilizer diluted to one-quarter strength. Suspend fertilization during late autumn and winter.
WHERE TO PUT IT
Hoya linusii makes an impressive architectural statement when trained onto a vertical trellis near an east-facing or west-facing window, or displayed in a warm sunroom with bright filtered light. Maintain comfortable room temperatures between 20°C and 28°C during active growth, ensuring winter temperatures remain safely above 16°C. Position the pot away from cold winter window drafts and drying forced-air registers. Guide and tie new runner vines gently to the trellis as they emerge to maintain an attractive climbing shape.