What is the single most important factor in postharvest flower care and handling?

What is the single most important factor in postharvest flower care and handling?

• A. Humidity control
• B. Temperature management
• C. Light exposure
• D. Nutrient delivery

Answer: (B)

Keeping flowers cool after harvest is the most important factor because it directly slows the aging process. Once cut, flowers still respire, burning stored sugars to stay alive. Lower temperatures slow respiration, preserving these sugars, delaying ethylene production and its aging effects, and reducing water loss and microbial growth in the water. With metabolism slowed, flowers stay firm, colors stay more vibrant, and vase life is extended. The respiration rate roughly doubles with each 10°C rise, so moving from cool storage to room temperature rapidly accelerates aging, making temperature control the single most reliable lever across species. Other factors like humidity, light exposure, and nutrients do influence freshness, but they don’t alter the fundamental rate of aging as directly, and nutrients aren’t supplied after harvest. Be mindful that some tropical or delicate flowers can suffer chilling injury if storage becomes too cold, so use species-appropriate temperatures.

Keeping flowers cool after harvest is the most important factor because it directly slows the aging process. Once cut, flowers still respire, burning stored sugars to stay alive. Lower temperatures slow respiration, preserving these sugars, delaying ethylene production and its aging effects, and reducing water loss and microbial growth in the water. With metabolism slowed, flowers stay firm, colors stay more vibrant, and vase life is extended. The respiration rate roughly doubles with each 10°C rise, so moving from cool storage to room temperature rapidly accelerates aging, making temperature control the single most reliable lever across species. Other factors like humidity, light exposure, and nutrients do influence freshness, but they don’t alter the fundamental rate of aging as directly, and nutrients aren’t supplied after harvest. Be mindful that some tropical or delicate flowers can suffer chilling injury if storage becomes too cold, so use species-appropriate temperatures.