Rowley is the gardener supervisor of the Kenilworth Aquatic Gardens in Northeast Washington. There are National Park wetlands in D.C.?

Yes, Kenilworth Aquatic Gardens is the only National Park Service unit dedicated to cultivating water-loving plants. This 12-acre sanctuary on the east bank of the Anacostia River with surrounding wetlands features over 45 man-made ponds filled with a variety of tropical and hardy water lilies, lotus, and other aquatic species.