Nature-based preschools and kindergartens continue to rise in popularity in the United States. A national survey of nature-based early childhood educators conducted in 2017 identified more than 250 nature preschools and forest kindergartens operating across the country. The programs serve approximately 10,000 children every year, and eight out of ten programs report that they started a waiting list in the previous twelve months. However, the survey also suggests that the nature-based programs do not reflect the cultural and linguistic diversity of our nation. (author abstract)