Why is your sunflower closing?

Sunflowers typically close their blooms at night or during cloudy weather to protect the delicate petals from damage and conserve moisture. This behavior, known as "nyctinasty," helps them prepare for the next day's sunlight, allowing for optimal photosynthesis. Additionally, closing can help reduce water loss and shield the flower from potential cold temperatures. Once the sun rises, the sunflower will reopen to follow the sun's movement throughout the day.