Hoya 'Puom Siam Ruby' (PMP 176) – Unique Hybrid with Distinctive Foliage
Hoya 'Puom Siam Ruby' (PMP 176) is a unique hybrid that combines the best traits of its parent plants, Hoya ‘Joy’ and Hoya ‘Jennifer’. Originating from Bangkok, Thailand, this exquisite variety showcases its beauty through its distinct leaf structure and striking colors. The plant is highly valued by collectors and enthusiasts for its aesthetic appeal and relatively easy care requirements. Its glossy leaves, adorned with raised venation and bordered by rich, dark margins, make it a standout addition to any collection. Whether grown in a pot or as a hanging plant, Hoya ‘Puom Siam Ruby’ brings a touch of tropical elegance to indoor spaces.
Key Features of Hoya 'Puom Siam Ruby'

 
Growth Habit: Hoya ‘Puom Siam Ruby’ has a compact, vining growth pattern that allows it to adapt well to various indoor environments. Its stems can trail or climb when provided with support, making it versatile in terms of display options. Mature plants can reach lengths of 60 to 100 cm, making them suitable for hanging baskets or mounted displays.
 
Leaf Appearance: The leaves of this hybrid are thick, glossy, and succulent–like, with prominent raised veins that give them a textured appearance. The dark leaf margins create a beautiful contrast against the lighter green center, adding depth and dimension to the foliage. Each leaf measures approximately 5–10 cm in length and 2–4 cm in width.
 
Flowering: Although it may take a few years for Hoya ‘Puom Siam Ruby’ to bloom, the wait is worth it. The plant produces clusters of small, star–shaped flowers that are typically white or light pink with a contrasting red center. The flowers are fragrant and last for several days, adding to the plant's ornamental value.

Hoya 'Puom Siam Ruby' Care Guide
Keeping Hoya ‘Puom Siam Ruby’ thriving is straightforward with the right care. Follow these guidelines to ensure your plant remains healthy and vibrant:
Light Requirements

 
Provide bright, indirect light for optimal growth.
 
It can tolerate some direct morning sun, but avoid harsh afternoon rays as they may scorch the leaves.

Watering

 
Water thoroughly when the top 2–3 cm of soil feel dry.
 
Prefers a well–draining mix to prevent root rot. Reduce watering frequency during cooler months.

Humidity

 
Enjoys higher humidity levels (around 60–80%) but can adapt to average indoor humidity.
 
Avoid placing it near dry, drafty areas like radiators or air conditioners.

Temperature

 
Ideal temperatures range from 18–25°C.
 
Protect the plant from sudden temperature drops or drafts.

Soil

 
Use a well–draining, airy potting mix.
 
A combination of orchid bark, perlite, and peat works well to provide the necessary aeration and drainage.

Fertilization

 
Feed monthly with a balanced, diluted fertilizer during the growing season (spring and summer).
 
Avoid over–fertilizing, as this can lead to nutrient burn.

Pruning

 
Regularly trim any dead or yellowing leaves to maintain the plant's appearance.
 
Prune the vines lightly to encourage bushier growth.

Common Issues and Solutions for Hoya 'Puom Siam Ruby'

 
Yellowing Leaves: This may indicate overwatering or poor drainage. Allow the soil to dry out between watering and ensure your pot has adequate drainage.
 
Leaf Curling: Insufficient humidity or underwatering can cause the leaves to curl. Increase humidity by placing a water tray nearby or using a humidifier, and ensure consistent watering.
 
Pests: Watch out for mealybugs, spider mites, and aphids. Treat infestations promptly with insecticidal soap or neem oil.
 
Root Rot: Caused by overwatering or poor drainage. Repot in fresh soil and reduce watering frequency.

Extra Tips for Thriving Growth of Hoya 'Puom Siam Ruby'

 
Hoya ‘Puom Siam Ruby’ prefers to be slightly root–bound, so don't rush to repot it frequently. Every 2–3 years is sufficient, or when you notice roots emerging from the drainage holes.
 
Support its trailing habit by providing a trellis or hanging basket. This will not only help it grow better but also showcase its beautiful vines and leaves more effectively.
 
Understanding the natural habitat of its parent species can greatly aid in providing ideal care. Hoya ‘Joy’ and Hoya ‘Jennifer’ both thrive in warm, humid conditions with filtered light, so mimicking these conditions in your home will help Hoya ‘Puom Siam Ruby’ flourish.

Origin of the Name Hoya 'Puom Siam Ruby'
The genus Hoya was named in honor of the English botanist and gardener Thomas Hoy (c. 1750–1822), who significantly contributed to the cultivation and study of this diverse plant group. The species name ‘Puom Siam Ruby’ reflects its origin and the distinctive, ruby–colored leaf edges that set this plant apart.