Light
Bright indirect • approx. 10,000–20,000 lux




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Hoya ruthiae is a lithophytic Hoya from Sarawak, Malaysian Borneo, where it grows on vertical limestone rather than in ordinary organic pockets. Its glossy lance-shaped leaves can reach about 7–15 cm and often blush red in stronger light, with fine speckling and thin stems that give the plant a refined, slightly delicate look. Flowers appear in small rounded umbels, each bloom showing pale pink to cream tones with yellow and purple details and visible nectar.
Indoors it performs best in very airy, rocky, breathable media or on mounts, with bright filtered light, warm temperatures around 18–28 °C, humidity around 60–80%, and drying between waterings.
Slow to root and slow to bulk up, it rewards patient growers who can replicate its limestone, high-airflow conditions.
Light
Bright indirect • approx. 10,000–20,000 lux
Water
Water when ~60–80% dry
Substrate
Airy + fast-draining • Light moisture buffer • Bark-based • Medium-chunky
Temperature
Ideal: 16–24 °C • Avoid below: 10 °C
Humidity
Humid 60–80 % +
Growth habit
twining epiphytic vine
Support
optional
Growth speed
Average
Max size indoors
Max. trail length: 100 cm • Max. spread: 50 cm
Toxicity & safety
Non-toxic & Pet Friendly
Origin & habitat
Philippines; wet tropical habitat
These metrics are standardised reference points. We compile them by reviewing and cross-checking multiple botanical and horticultural references, then refining them through real-world growing experience. Source links: Plant Care Resources.
Please use the values as guidance. Conditions vary by home, so the same plant can respond differently. For plant-specific context, read the full product description and browse our Plant Care Guides.
Your new plant has just travelled a long way and needs a calm start in its new home. For step-by-step unboxing and first-week care, check our after-delivery care guide. For deeper tips on how your plant settles in over the next weeks, read our houseplant acclimatization guide.