These are plug sized
🌿 Stelis argentata Terrarium Care Sheet (Vented Setup)
Overview:
Stelis argentata is a miniature to small epiphytic orchid from the cool, moist cloud forests of the Andes. It’s beloved for its silvery, shimmering leaves (hence the name argentata) and its charming, small flowers. This species thrives in high humidity, low light, and excellent airflow—making it an ideal choice for a vented or open terrarium with a stable microclimate.📏 Size & Growth Habit
Type: Miniature epiphyte (Pleurothallidinae)
Mature Size: 8–15 cm tall
Growth Habit: Forms clumps of slender stems with oval to elliptical, soft-leathery leaves
Flowers: Tiny, usually maroon or reddish, borne close to the leaf base on short upright spikes
💡 Light Requirements
Light Level: Low to moderate
Lux Range: 6,000–12,000 lux (600–1,100 foot-candles)
Best Placement: North- or east-facing window, or shaded section under low-output grow lights
Caution: Very sensitive to intense light—direct sun causes leaf damage
🌡 Temperature & Humidity
Daytime Temps: 16–22°C
Nighttime Temps: 10–15°C
Humidity: 80–95% (critical)
Airflow: Gentle but constant—vented terrarium required; stagnant air causes decline
💧 Watering & Moisture
Watering Frequency: 4–6 times per week or daily in hot weather
Water Type: Rainwater, RO, or distilled—roots are sensitive to salts
Moisture Preference: Substrate should remain moist but not soggy
Mist Gently: Light morning misting; avoid wetting the crown excessively
🌱 Mounting & Medium
Mounting:
Cork or tree fern slab with a pad of sphagnum moss
OR in small mesh/net pots with fine-grade bark + sphagnum
Drainage Layer: LECA or gravel in terrarium base with mesh platform to avoid root contact with standing water
Humidity Tip: Live moss around the base helps regulate microclimate
🌬 Airflow
Absolutely necessary:
Passive airflow through vents or mesh top
Or install a small fan to keep the air moving gently
Open terrarium daily or run micro-fan 24/7 if closed
🌸 Flowering & Growth
Blooming Habit: Year-round with proper care
Flowers: Small, maroon to reddish-purple, short-lived but regularly produced
Rest Period: None—this species appreciates constant conditions
🌿 Fertilizer
Type: Dilute, balanced orchid fertilizer (e.g. 20-20-20 or MSU)
Frequency: Every 2–3 weeks during active growth
Strength: 1/8–1/4 of label dose
Flush: With clean water monthly to prevent salt buildup
⚠️ Common Issues
| Problem | Cause | Solution |
|---|---|---|
| Yellowing leaves | Water with salts or direct sun | Use pure water; reduce light |
| Crown or leaf rot | Poor airflow, water pooling | Improve ventilation, water earlier in day |
| No flowering | Light too low or not stable enough | Increase brightness slightly and stabilize environment |
✅ Terrarium Tips
Great for cool, damp, cloud-forest style setups
Use live moss or leaf litter for a natural look and humidity buffering
Pair with other mini Pleurothallids or orchid-safe ferns for a harmonious terrarium ecosystem
Avoid letting it dry out—even for a day