Light
Bright indirect • approx. 10,000–20,000 lux
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Apocynaceae
Hoya 'Puom Siam Ruby' (PMP 176)
- Curated selection:
Every plant is hand‑picked for health and visual appeal, so you receive a strong, well‑established plant.
- Representative photos:
Product images show a typical plant of this variety. Natural differences in leaf number, shape or variegation are normal, your plant will still match in type and quality.
- Size details:
Listed sizes refer to pot diameter (cm) and approximate overall height (cm) from the base of the pot to the tallest leaf or stem.
- “Get What You See” items:
If you are buying the exact plant shown in the photos, this is clearly stated in the size section.
- Individual photos:
One‑off photos are only provided when this is explicitly mentioned in the size section. - For special traits or small quirks, please check the full product description.
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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.
- Care basics , Main hub with links to all houseplant care guides.
- After delivery & first week , Unpacking, first placement, and early recovery.
- Light, How much light houseplants really need indoors.
- Watering , When to water and how to avoid root rot.
- Substrates & roots, Potting mixes and drainage for strong root systems.
- Humidity, When humidity matters and what actually helps.
- Fertilizing, Simple feeding routine without burning roots.
- Problems & pests, Yellow leaves, brown tips, bugs, and fixes that work.
- Semi-hydro, How to run low-maintenance mineral substrates.
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Hoya 'Puom Siam Ruby' (PMP 176)
Quick Care Guide
Watering
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
Moist 50–60 %
Growth habit
Climbing or trailing epiphytic perennial vine.
Support
recommended
Growth speed
Average
Max size indoors
Max. trail length: 100 cm • Max. spread: 50 cm
Toxicity & safety
Non-toxic
Origin & habitat
Horticultural Hoya cultivar
Outdoor growing
Outside from 15 °C · sheltered from wind and rain
How to read these values
These care values are quick reference points for indoor growing. Use them as a guide, then adjust for pot size, substrate, temperature and how quickly the substrate dries.
For more detail, read the full product description or visit our Plant Care Guides.
- Light: level and approximate lux at leaf level.
- Watering: “% dry” shows how far the substrate should dry before watering again.
- Substrate: structure, drainage, moisture retention, base material and particle size.
- Temperature: “Ideal” shows the preferred range; “Avoid below” marks the cold-stress threshold.
- Humidity: target range; steady conditions usually matter more than exact numbers.
- Growth habit: how the plant grows, such as upright, climbing, trailing, clumping or rosette-forming.
- Support: whether a stake, pole or trellis is needed, optional or unnecessary.
- Growth speed: expected pace under suitable indoor conditions; use as a guide, not a promise.
- Max size indoors: realistic long-term indoor size under good conditions.
- Toxicity & safety: irritation, toxicity or physical hazards such as spines or bristles.
- Origin & habitat: native range, hybrid background or typical habitat where relevant.
- Outdoor growing: when a potted indoor plant can be placed outside and what outdoor protection it needs.
Hoya 'Puom Siam Ruby' – Thai Hybrid with Ruby-Edged Foliage and Sculptural Texture
Hoya 'Puom Siam Ruby' (PMP 176) is a rare hybrid developed in Thailand from a cross between Hoya 'Joy' and Hoya 'Jennifer'. Known for its sculpted, veined foliage and deep red-to-purple margins, this slow-growing Hoya stands out in any collection. Compact, easy to care for, and bloom-capable with patience, it’s a must-have for collectors who appreciate foliage drama and structural beauty in one plant.
Quick Facts – Hoya 'Puom Siam Ruby'
- Hybrid: H. 'Joy' × H. 'Jennifer' (Thailand, PMP 176)
- Leaf Traits: Thick, glossy leaves with raised veins and dark ruby edges
- Growth Habit: Compact climber or trailer; up to 100 cm with support
- Blooms: Star-shaped white-pink flowers with red coronas, lightly scented
- Pet Safety: Non-toxic, but contains latex sap
Why Collectors Love Hoya 'Puom Siam Ruby'
This hybrid’s deep texture, contrast-rich leaf margins, and compact form make it ideal for shelf or hanging displays. Under bright indirect light, the red pigmentation intensifies, offering dynamic visual interest. While it may take time to bloom, the flowers reward patient growers with delicate clusters and a subtle evening fragrance.
How to Keep Hoya 'Puom Siam Ruby' Thriving
- Light: Needs bright, indirect light. Tolerates gentle morning sun but avoid hot afternoon rays.
- Watering: Water when the top 2 – 3 cm of soil is dry. Reduce frequency in low light or cool temps.
- Humidity: Prefers 60 – 80% but adapts to 50%+. Boost with trays or a humidifier if needed.
- Temperature: Optimal range: 18 – 25 °C. Protect from sudden drops below 15 °C.
- Soil Mix: Use a chunky, airy substrate: orchid bark, perlite, and coco coir or light aroid mix.
- Fertilizing: Feed monthly with a balanced liquid fertilizer. No seasonal adjustment needed.
- Potting: Allow to stay slightly root-bound. Repot only every 2 – 3 years or when roots circle the base.
Flowering Tips and Propagation Notes
- Blooms: May take 2 – 3 years to flower indoors. Consistent light and pot-tight roots are key.
- Peduncle Care: Never cut flower stalks after blooming – Hoyas rebloom from the same peduncles.
- Propagation: Use 1 – 2 node stem cuttings. Root in perlite, water, or moss with steady warmth and humidity.
- Growth Speed: Slow to moderate; faster in higher humidity and stable conditions.
Common Issues (And How to Solve Them)
- Yellowing Leaves: Usually from overwatering. Improve drainage and reduce frequency.
- Leaf Curling: Indicates underwatering or dry air. Check soil moisture and boost humidity.
- Pests: Susceptible to mealybugs and mites. Treat early with neem oil or insecticidal soap.
- Root Rot: Prevent with airy soil and breathable pots. Repot and remove mushy roots if detected.
Is Hoya 'Puom Siam Ruby' Safe for Pets?
- Non-Toxic: Safe for cats and dogs if touched, but not edible. Keep out of reach to avoid chewing.
- Latex Warning: When pruned, the plant exudes a sticky white sap. Use gloves if you're latex-sensitive.
Where the Name Comes From
The genus Hoya honors English botanist Thomas Hoy (1750 – 1822), a pioneer in tropical plant cultivation. ‘Puom Siam Ruby’ likely refers to its Thai nursery origin (‘Puom’), national reference (‘Siam’), and the vivid red tones in its leaves (‘Ruby’). PMP 176 is its collector or grower reference code.
Add Hoya 'Puom Siam Ruby' to Your Collection
This rare Thai hybrid combines the lush texture of its parentage with a subtle ruby glow, ideal for growers who want foliage with character. Compact, rewarding, and visually rich – Hoya 'Puom Siam Ruby' is a gem for any indoor jungle. Order yours now and grow something truly special.
Plant names, growth habits, natural habitats and indoor care guidance are checked against trusted botanical, habitat and horticultural references before publication.View our plant care resources and references.
FAQs about Hoya 'Puom Siam Ruby' (PMP 176)
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