The abundance of prairie plants provides for impressive wildflower displays in the late spring and summer months. The pasqueflower is the first to bloom, in April, portending the coming of spring. Soon after, from May to September, a broad range of flowers appear on the landscape. Many flowers bloom in June and July, the peak months for flower viewing. Some flowers, such as sunflowers, asters, and rabbitbrush, hold out for the late summer months of August and September. In late September, as the seasons begin to change, cottonwood leaves turn a brilliant gold color before falling to the ground.