Temperature Range describes the span of indoor temperatures where a plant’s metabolic processes function normally without causing stress or energy imbalance. It reflects enzyme activity, respiration rate, and water movement rather than comfort preferences or outdoor hardiness.
Within this range, photosynthesis, respiration, and nutrient transport stay in balance, allowing the plant to grow and recover from minor stress. Near the edges of the range, metabolism slows or accelerates unevenly, increasing sensitivity to issues like low light, slow dry-down, or nutrient buildup.
Temperature Range is not about chasing an exact number. It defines a safe operating window where the plant can maintain stable function indoors.
In short, Temperature Range explains where a plant’s internal systems stay aligned, helping growers understand why growth and watering behaviour change when indoor temperatures drift too far from the plant’s comfort zone.
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