Moth Orchid (Hydro)
Phalaenopsis spp.
Malay names: Orkid Bulan
Orchids adapt well to semi-hydro with LECA and an air gap; stable moisture with low EC.
🌞 Light & Temperature
Light: Bright filtered light (east window or shaded balcony)
Temperature: 20–32°C (cooler nights help spikes)
🪴 Container & Medium
Container: Semi-hydro LECA in clear pot with side holes; water level well below crown; bright filtered light.
Medium / Solution: Medium: LECA semi-hydro; Solution: pH 5.8–6.2, EC 0.6–1.0 mS/cm
💧 Watering / Solution Maintenance
Schedule: Top-up when reservoir low; flush monthly
Top-up: Keep 1–2 cm reservoir; never submerge crown
pH 5.8–6.2; EC 0.6–1.0 mS/cm
🧪 Nutrients
Type: Orchid fertilizer 'weakly, weekly'
Frequency: Weekly very dilute; flush with plain water periodically
Dosage/EC: EC 0.6–1.0 mS/cm; pH 5.8–6.2
🍓 Harvest
Start: Blooms seasonally after spikes form
Seasonality: Blooms typically last 4–8+ weeks
Duration: Spikes can rebloom if cut above node
Harvest Indicators: Flowers fully open and persistent
Tips: Cut spent spikes to a node to attempt rebloom; ensure bright, cool nights for spike initiation.
🌱 Propagation
Keiki (plantlets) or division.
🐛 Pests & Diseases
- Scale/mealybugs: Swab with alcohol; neem lightly; avoid oil on blooms.
🌦️ Seasonal Notes (Malaysia)
High humidity helps; ensure airflow to prevent fungal issues.
📝 System Notes
Keep crown above media; do not overfill reservoir.
💡 Extra Care Tips
- Use translucent pot to monitor roots
- Give bright light with some morning sun
Note
EC and pH are guidelines—adjust to plant response and your water source. In monsoon humidity, increase airflow and reduce overcrowding to limit disease.