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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.Hoya clemensiorum Dark Leaf is an exceptionally rare and highly sought-after form of the spectacular Hoya clemensiorum, a species native to Sabah, Borneo. Like the standard form, it is admired primarily for its dramatic foliage rather than its blooms but this darker-leaved variant offers an even bolder, more striking appearance.
The leaves are very large, leathery, and elongated, often reaching 2025 cm long and 810 cm wide. In the Dark Leaf form, the foliage is a deep, almost black-green, which provides a sharp contrast to the intricate silver-white venation that spreads across the leaf surface. This makes the veins appear even more pronounced, giving each leaf the appearance of a living piece of art.
When mature, the plant produces umbels of star-shaped flowers. The blooms are typically creamy-white to pale green with a darker pinkish or maroon corona, and while attractive and fragrant, the plant is prized primarily for its dramatic, veined foliage.
Requires bright, indirect light. Strong filtered light enhances the venation while keeping the dark leaf colour rich. Avoid harsh direct sun, which may scorch the foliage.
Water when the top 23 cm of soil feels dry. The thick leaves store water, so the plant tolerates slight drought better than waterlogging. Reduce watering in winter.
Temperature: Thrives in 1828C. Keep above 15C at all times.
Humidity: Prefers high humidity (6080%). Use a humidifier or grow in a greenhouse-style cabinet to maintain lush, healthy foliage.
Plant in a chunky, free-draining epiphytic mix orchid bark, perlite, coco husk, and a little peat-free compost. Repot every 23 years; Hoyas perform best when slightly root-bound.
Feed monthly during spring and summer with a high-potassium fertiliser to support both foliage health and flower development. Stop feeding in winter.
Prune vines lightly to control length and encourage branching. Never remove peduncles (flower spurs), as Hoyas bloom from these repeatedly.
A slow-growing species, but as it matures, its leaves become larger and more intricately veined. Vines can eventually reach over a metre, making it ideal for trellises or display boards.
Loss of venation intensity: Caused by insufficient light.
Yellowing leaves: Overwatering or poor drainage.
Brown edges: Low humidity.
Pests: Occasionally susceptible to mealybugs, thrips, or spider mites.
Named after Dr. Joseph Clemens, Hoya clemensiorum is regarded as one of the most spectacular foliage Hoyas in cultivation. The Dark Leaf form amplifies this beauty with deeper pigmentation that makes its venation appear even more striking. It is considered a grail plant among serious Hoya collectors.
Quick Care Summary
Light: Bright, indirect; avoid harsh sun
Water: Allow topsoil to dry slightly; avoid soggy soil
Temperature: 1828C; protect below 15C
Humidity: High (6080% recommended)
Soil: Chunky, airy, epiphytic mix
Feed: Monthly in spring/summer with high-potassium fertiliser
Growth: Slow-growing vine; large, elongated dark green leaves with pronounced silvery venation; umbels of creamy-pink fragrant flowers
