Hoya sp. Kho Resus 'Sunda Hang' – Rare Field-Collected Hoya with Starry Yellow Blooms

Hoya sp. Kho Resus 'Sunda Hang' is a rare, field-collected Hoya from Southeast Asia, likely originating in the Sunda region. The label “Kho Resus” appears to be a collector tag or phonetic reference to a locality, possibly misrecorded or unpublished. This species is not botanically described, making it a true collector’s item. It features thick, oval-shaped leaves in a fresh green tone and produces soft, pale yellow to cream flowers that follow the star-shaped pattern typical of the genus.
Foliage and Form
 
Leaf Shape: Thick, smooth, oval leaves with subtle venation
 
Color: Fresh medium green; holds color well under indoor conditions
 
Growth Habit: Slow-growing trailing or climbing vine; ideal for trellises or hanging baskets
Flowering Traits
The flowers of Hoya sp. Kho Resus 'Sunda Hang' are pale yellow to cream, star-shaped, and form in small umbel clusters. Exact bloom size and frequency are not well documented, and fragrance is currently unverified. Like many field-collected Hoyas, it may take time and ideal conditions to flower indoors.
Care Guide for Hoya sp. Kho Resus 'Sunda Hang'
 
Light: Prefers bright, indirect light; too much direct sun may scorch foliage
 
Water: Allow the top few cm of substrate to dry between waterings
 
Humidity: Best growth occurs at 60–70% humidity, but tolerates standard indoor conditions with good airflow
 
Substrate: Use an airy mix of orchid bark, perlite, and coco coir or peat-free compost
 
Feeding: Fertilize monthly with a diluted balanced liquid fertilizer during active growth
Display Tips and Propagation
 
Support: Can be trained vertically or left to trail naturally
 
Potting: Prefers to be slightly root-bound; always use a container with drainage holes
 
Propagation: Root easily from stem cuttings placed in water or moist substrate
Origin and Etymology
Hoya is a genus named after English gardener and botanist Thomas Hoy (c. 1750–1822). The suffix “Kho Resus” is likely a collector’s or field reference, possibly a mistranscription of a locality in Indonesia or Thailand. “Sunda Hang” may refer to the Sunda Islands, reinforcing its Southeast Asian origin. This Hoya remains undescribed in scientific literature and is traded under its field name only.
Note: The name “Kho Resus” has no official publication or record in major plant databases and should be regarded as an informal identifier used by collectors.
Add This Rare Tropical Climber to Your Collection
Hoya sp. Kho Resus 'Sunda Hang' is ideal for collectors who enjoy growing field-collected or unidentified species. Its lush green foliage and pale yellow blooms offer quiet beauty, and its rarity makes it a standout in any Hoya collection. Bring home this mysterious Southeast Asian vine and grow something truly off the beaten path.