The Plant Division of the Center for Research of Endangered Wildlife (CREW) conducts research dedicated to propagating and preserving endangered plants. The Endangered Species Propagation Program uses tissue culture to grow rare species which have challenged traditional methods of propagation. In 2005, the Cincinnati Zoo & Botanical Garden became a member of the Center for Plant Conservation (CPC). By partnering with the Center for Plant Conservation and botanical gardens around the country, CREW is applying these techniques to make plants available for research and reintroduction. The Horticulture Department via the Native Plant Program works closely with CREW, often growing plants in our nursery to use in our gardens and to plant back into the wild.