Dendrobium pentapterum

Dendrobium pentapterum – Technical Data Sheet
Origin and Classification
 
 
Scientific name: Dendrobium pentapterum Schltr.
 
 
Origin: New Guinea, Papua, Philippines, where it grows as an epiphyte in humid mountain forests (500–2,000 m in altitude).
 
 
Natural habitat: Humid tropical forests, on tree trunks or branches, in a cool and misty climate.
 
 
Classification: Orchidaceae family, Epidendroideae subfamily, Malaxideae tribe, Dendrobiinae subtribe.
 
 
Special feature: Nicknamed "Five-Winged Dendrobium" for its star-shaped, often multicolored flowers (white, pink, purple, yellow), and its abundant blooming.

Appearance
 
 
Size: Small to medium (10–30 cm in height).
 
 
Pseudobulbs: Thin and pendant, green or yellowish (10–20 cm long).
 
 
Leaves: Lanceolate, leathery, dark green, narrow (3–8 cm long).
 
 
Roots: Fine, adapted to hanging basket or mounted culture.

Flowers
 
 
Shape: Flowers in short and dense clusters, star-shaped with five petals.
 
 
Color: White, pink, purple, yellow, often with a darker or spotted lip. Some varieties may feature bicolor or striated flowers.
 
 
Fragrance: Light, floral.
 
 
Flower size: 3–4 cm in diameter.
 
 
Blooming period: Year-round (peak in spring–summer).
 
 
Bloom duration: 3–4 weeks per flower.

Cultivation
Temperature
 
 
Day: 18–25°C.
 
 
Night: 12–16°C (a day/night drop of 6–8°C promotes blooming).

Humidity
 
 
Ideal rate: 60–75% year-round.
 
 
Tip: Use a humidifier or a pebble tray to maintain humidity in dry indoor environments.

Light
 
 
Intensity: 15,000–25,000 lux (filtered and indirect light).
 
 
Ideal source: East or north window, or artificial lighting (horticultural LEDs).
 
 
To avoid: Direct sunlight during hot hours.

Watering
 
 
Growth period (spring–summer): Regular watering (every 2–3 days), letting the substrate dry out slightly between waterings.
 
 
Rest period (autumn–winter): Reduce to 1–2 times per week, without letting it dry out completely.
 
 
Method: Soaking or watering from above with soft water.

Substrate
 
 
Hanging basket: Highly draining mix – fine bark (60%), sphagnum moss (30%), charcoal (10%).
 
 
Alternative: Mounting on a tree fern or cork plaque, with a layer of sphagnum moss.
 
 
Repotting: Every 2–3 years, in spring, when new roots appear [orchids.fandom.com].

Fertilization
 
 
Growth period: Balanced fertilizer (20-20-20), diluted to ¼ strength, every week.
 
 
Rest period: Reduce to every 2–3 weeks in winter.

Tips for Successful Cultivation
 
 
To maximize blooming: Maintain a distinct day/night temperature drop and a light winter rest period (reduced watering). Cultivate in a hanging basket to allow the flower spikes to hang freely.

Additional Remarks
 
 
Dendrobium pentapterum is a miniature and free-flowering species, ideal for collectors of Asian orchids or terrariums.
 
 
A lot of 15 plants allows for consistent grouped cultivation in hanging baskets, creating an abundant and colorful bloom year-round.
 
 
Perfect for intermediate greenhouses, display cases, or for indoor growing under artificial light.