The fiddle-leaf fig (Ficus lyrata) is a tropical plant native to West Africa, where it thrives in warm, humid environments. To replicate its natural habitat, maintaining an ideal temperature range is crucial for its growth, leaf health, and overall vitality. Temperature directly affects metabolic processes like photosynthesis, transpiration, and nutrient uptake, making it a key factor in care.
The ideal temperature for a fiddle-leaf fig ranges between 65°F (18°C) and 75°F (24°C) during the day. At night, temperatures can drop slightly to 60°F (15°C) to 70°F (21°C). This range mimics the plant’s native tropical climate, ensuring steady growth and preventing stress. Temperatures outside this range may lead to slowed growth, leaf drop, or susceptibility to pests.
High Temperatures (Above 85°F/29°C): Prolonged exposure to heat can cause leaf scorch, wilting, or excessive water loss through transpiration. While fiddle-leaf figs tolerate brief warmth, sustained high temperatures may demand increased humidity to compensate.
Low Temperatures (Below 50°F/10°C): Cold drafts or sudden drops can shock the plant, leading to brown-edged leaves, stunted growth, or leaf drop. Temperatures below 50°F (10°C) risk irreversible damage to cell tissues.
Spring/Summer: During active growing seasons, maintain consistent warmth (65–75°F). Avoid placing the plant near air conditioning vents or direct, hot sunlight through windows, which can create microclimates.
Fall/Winter: Reduce nighttime temperatures slightly (60–70°F) to mimic natural cycles, but avoid cold drafts. Use a space heater or thermal curtain if necessary, but keep the plant away from direct heat sources.
Fiddle-leaf figs prefer 40–60% humidity alongside optimal temperatures. Dry air exacerbates heat stress, while cold drafts combined with low humidity can cause leaf crisping. Use a humidifier or pebble tray to stabilize moisture levels, especially in temperature-controlled indoor spaces.
Sudden shifts in temperature—such as moving the plant outdoors in summer—should be gradual. Acclimate the fiddle-leaf fig over 1–2 weeks by incrementally increasing exposure to new conditions. This prevents shock and allows the plant to adjust its physiological processes.
Use a digital thermometer near the plant to track ambient temperature. Smart thermostats or hygrometers can help maintain stable conditions. Observe the plant’s response: curled leaves may indicate heat stress, while blackened tips often signal cold damage.
