Basil is highly sensitive to temperature fluctuations. Exposure to temperatures below 50°F (10°C) can cause the leaves to turn black and wilt. On the other hand, temperatures above 90°F (32°C) can also stress the plant, leading to wilting.
To protect your basil from temperature extremes, consider bringing potted plants indoors during cold spells or providing shade during the hottest part of the day. Consistent temperatures within the optimal range will help maintain your basil’s health.
5. The Role of Sunlight in Basil Growth
Sunlight is a critical factor in basil’s growth and overall health. Basil plants require a minimum of 6 to 8 hours of direct sunlight daily to perform photosynthesis effectively. Without sufficient light, the plant’s growth will be stunted, and it may begin to wilt.
If you’re growing basil indoors, place it near a south-facing window or use grow lights to supplement natural light. Regularly rotate the plant to ensure all sides receive equal sunlight exposure.
6. Soil Quality: What Your Basil Needs