Hoya rundumensis ‘Splash’ is a rare, beautifully speckled tropical vine celebrated for its silver-flecked foliage and clusters of richly coloured, fragrant blooms. Native to the forests of Borneo and named after the Rundum region in Sabah, this species is a standout among Hoyas for both its decorative leaves and its stunning, dark blossoms.

The leaves are thick, oval to slightly elongated, with a glossy green surface dusted in silver splashes that shimmer in bright light. Mature plants produce cascading clusters of burgundy-red flowers with pale pink centres, their porcelain texture giving them a jewel-like quality. Each bloom releases a sweet, honey-caramel fragrance, especially noticeable in the evening.

Elegant, compact, and full of character, Hoya rundumensis ‘Splash’ is a collector’s gem — combining distinctive foliage, rich blooms, and a naturally graceful trailing habit.

Hoya rundumensis ‘Splash’ – Care Guide

Light

Thrives in bright, indirect light. A few hours of soft morning or late-afternoon sun will enhance the silver splashes and encourage flowering. Avoid harsh midday rays, which can scorch the leaves, or deep shade, which may reduce both variegation and blooms.

Watering

Allow the top 3–4 cm of soil to dry before watering again. Hoyas store moisture in their thick leaves and prefer light, even hydration. Overwatering can cause root rot, while prolonged dryness may wrinkle the foliage. Water less frequently during the winter months.

Temperature and Humidity

• Temperature: Prefers warmth between 20–30°C; avoid cold draughts and temperatures below 15°C.

• Humidity: Enjoys moderate to high humidity (60–80%), though it adapts well to normal household conditions. Increased humidity encourages larger leaves and more frequent flowering.

Soil and Potting

Use a loose, well-draining epiphytic mix such as orchid bark, perlite, and coco coir or a specialist Hoya blend. This combination allows airflow and prevents soggy roots. Terracotta pots are ideal for moisture control. Repot every 2–3 years in spring to refresh the mix and provide space for growth.

Feeding

Feed every 4–6 weeks during spring and summer with a diluted, balanced fertiliser or one designed for blooming plants. A phosphorus-rich feed can enhance flowering. Stop feeding in autumn and winter when growth slows.

Pruning and Maintenance

Trim long vines lightly to maintain shape and encourage branching. Never remove the flower spurs (peduncles) after blooms fade — new flowers will return to these same points each season. Wipe leaves gently with a damp cloth to remove dust and accentuate the silver speckling.

Growth and Maturity

A moderate grower with a compact, trailing habit, typically reaching 60–100 cm in length. With proper care, mature plants bloom regularly throughout the warm months, rewarding patience with abundant clusters of richly scented flowers.

Common Issues

• Yellow leaves: Overwatering or lack of drainage.

• Wrinkled leaves: Underwatering or low humidity.

• Fewer blooms: Insufficient light or cutting off flower spurs.

• Pests: Occasionally mealybugs or aphids; treat promptly with neem oil or insecticidal soap.

Background and Benefits

Native to Borneo, Hoya rundumensis is an epiphytic climber that attaches to tree trunks and branches in the rainforest canopy. The ‘Splash’ form is a cultivated variant prized for its silvery-spotted foliage, which adds a modern, decorative element to this already exquisite species.

Its richly coloured flowers and strong fragrance make it a favourite among Hoya enthusiasts, while its modest care requirements make it surprisingly easy to grow. Like all Hoyas, it also helps purify indoor air and contributes to a serene, tropical atmosphere in any room.

Quick Care Summary

Light: Bright, indirect; gentle morning sun preferred
Water: Let top 3–4 cm of soil dry before watering
Temperature: 20–30°C; avoid below 15°C
Humidity: Moderate to high (60–80%)
Soil: Airy, free-draining mix – bark, perlite, coco coir
Feed: Every 4–6 weeks in spring/summer
Growth: Compact trailing vine, 60–100 cm; glossy green leaves with silver splashes and burgundy-red, fragrant blooms

⚠️ Toxicity note: Contains mild latex sap that may irritate skin and is toxic if ingested. Keep out of reach of pets and children.

Styling Tip

Display Hoya rundumensis ‘Splash’ in a hanging pot or trailing from a high shelf, where its silver-spotted foliage can cascade elegantly. The rich burgundy blooms contrast beautifully against light backgrounds, making it ideal for bright interiors or greenhouse cabinets. It pairs perfectly with pale-leaf Hoyas such as Hoya heuschkeliana ‘Variegata’ or Hoya macrophylla ‘Splash’ for a refined, textural tropical display.