Temperature management is one of the most critical environmental factors influencing growth rate, spike initiation, and flowering quality in Phalaenopsis orchids.
At Gan Lin Agriculture, our production systems are engineered to maintain a stable thermal environment that ensures uniform growth, predictable flowering, and maximum production efficiency across all stages.
Temperature Range:
Day: 28 – 32 °C
Night: 25 – 27 °C
Objective:
Promote rapid leaf expansion and vigorous root growth.
Consistent warmth encourages strong photosynthetic activity and balanced plant morphology.
Management Notes:
Avoid day–night fluctuations greater than 3 °C, which can stress young tissues.
Maintain uniform air movement and adequate humidity to reduce heat accumulation.
Excessive cooling suppresses metabolism and increases disease susceptibility.
Temperature Range:
Day: 26 – 28 °C
Night: 18 – 20 °C
Objective:
Initiate flower spike differentiation while sustaining healthy vegetative growth.
A moderate temperature gap of 6–8 °C between day and night promotes spike formation.
Management Notes:
Implement gradual cooling; avoid abrupt temperature drops that can shock plants.
Combine temperature adjustment with moderate light intensity (12 000–15 000 lux) and balanced nutrition.
Sustained low temperatures below 17 °C may cause uneven spiking or chlorosis.
Temperature Range:
Day: 22 – 25 °C
Night: 18 – 20 °C
Objective:
Achieve uniform spike elongation, bud expansion, and color expression.
Controlled cooling enhances flower form, color saturation, and post-harvest longevity.
Management Notes:
Keep night temperature stable; sudden drops can trigger bud abortion.
Maintain humidity at 65–80 % with soft air circulation to prevent condensation.
Avoid exceeding 27 °C, as excessive heat shortens flowering duration and dulls color intensity.
Phalaenopsis performance depends on the balance between temperature and light energy.
At higher temperatures, light intensity (DLI) should be moderated to avoid photoinhibition.
Under cooler conditions, slightly higher DLI supports carbohydrate accumulation for spike and flower development.
| Growth Stage | Recommended DLI (mol m⁻² day⁻¹) | Typical Lux Range |
|---|---|---|
| Vegetative | 4 – 6 | 6 000 – 8 000 lux |
| Induction / Pre-Spiking | 6 – 8 | 8 000 – 11 000 lux |
| Flowering / Finishing | 7 – 9 | 12 000 – 15 000 lux (up to 20 000 lux for finishing) |
Key Control Parameters:
Air Circulation: Continuous, even airflow prevents hot/cold zones and ensures uniform transpiration.
Dehumidification: Maintain RH < 90 % at night to minimize Botrytis and bacterial soft rot.
Heating System: Use hot-water or forced-air heaters with digital sensors for precise control.
Cooling System: Combine shading screens, fogging systems, and evaporative pads for stable summer cooling.
Monitoring: Employ 24-hour data logging of temperature curves for accurate spike-timing prediction and climate analysis.
Short-term exposure to suboptimal temperatures can be tolerated if humidity and plant water status remain stable.
However, prolonged conditions below 18 °C or above 33 °C reduce photosynthetic efficiency, inhibit spike formation, and damage meristem tissue.
Rapid corrective measures — ventilation, misting, or targeted heating — are essential to restore physiological balance and prevent long-term damage.
Effective temperature management is the foundation of high-yield, predictable Phalaenopsis production.
Through precise environmental control and data-driven cultivation strategies, professional growers can achieve consistent performance and superior flowering quality.
At Gan Lin Agriculture, these temperature standards form the backbone of our global production system — ensuring every orchid meets the exacting expectations of commercial partners worldwide.
