Why do leaves on a ginkgo curl?

Leaves on a ginkgo tree may curl due to environmental stressors such as drought, high temperatures, or insufficient water supply. Pests or diseases can also cause curling as the tree reacts to damage or infection. Additionally, nutrient deficiencies, particularly in potassium or magnesium, can lead to abnormal leaf growth and curling. Observing these symptoms can help in diagnosing the underlying issue affecting the tree's health.