Dendrobium Orchids

Basic Care for Dendrobium Orchids

1. Light

• Bright, indirect light is best. An east or west-facing window is ideal.

• Too much direct sun can scorch the leaves, while too little will prevent blooming.

• Tip: If leaves are dark green, the plant may need more light. Light green to slightly yellow-green is ideal.

2. Temperature

• Daytime: 65–85°F (18–29°C)

• Nighttime: 55–65°F (13–18°C)

• Some types (like Dendrobium nobile) benefit from a cooler rest period in winter to encourage blooming.

3. Humidity

• Prefer 50–70% humidity.

• Use a humidity tray, room humidifier, or group plants together if your home is dry.

• Mist occasionally, but not late in the day to avoid rot.

4. Watering

• Water thoroughly when the potting mix is nearly dry (usually once a week).

• Never let the plant sit in water—good drainage is crucial.

• Reduce watering during winter or rest periods.

5. Potting and Medium

• Use a well-draining orchid mix: bark, perlite, charcoal, or coconut husk.

• Repot every 2–3 years or when the medium breaks down or roots outgrow the pot.

• Best to repot after blooming.

6. Fertilizer

• Use a balanced orchid fertilizer (20-20-20) diluted to half-strength.

• Feed every 2 weeks during active growth (spring and summer).

• Reduce or stop feeding during the dormant period (usually in winter for nobile types).

Blooming Tips

• Most Dendrobiums bloom once a year, with flowers lasting 6–8 weeks.

• Encourage blooming by:

  • Providing sufficient light.

  • Observing a cool, dry rest period (especially for D. nobile types).

  • Avoiding overwatering during the rest phase.

  • Ensuring proper nutrition during the growing season.

✂️ Pruning and Maintenance

• Do not cut the old canes (pseudobulbs) unless they are shriveled and dead—they store energy and can bloom again.

• After flowering, remove spent flower spikes, but keep the cane.

Common Problems