During the winter, the Conservancy horticulturist and gardeners plant annuals from seed in the greenhouses. Seeds are ordered in the late fall by the horticulturist, and unique flowers are selected. By June, the annuals are ready to be planted in the garden. Again, the flowers are changed each year to make the beds different. The Annual Garden blooms all summer into the fall. In early October, the annuals are removed by the staff, and the soil is roto-tilled to make room for the tulip bulbs to be planted.