Vertical Gardens Are on Display at the New York Botanical Garden When the 10th annual Orchid Show opens at the New York Botanical Garden in the Bronx on Saturday, it will feature an installation designed by Patrick Blanc, the Paris botanist known for creating lush vertical gardens on the walls of museums, hotels, parking lots and malls. Mr. Blanc chose all the plants in his part of the show, with the exception of the orchids; he left that responsibility to the garden's horticulturists. "I wanted to have not only orchids, but other plants that are growing with the orchids," he explained, but "my sensibility is much more concerned with vegetative architecture and the color of leaves." Mr. Blanc's photographs and drawings from his travels through French Guiana, Taiwan, Borneo and elsewhere will also be on display. Through April 22 at 2900 Southern Boulevard, Bronx. Information: (718) 817-8700 or nybg.org.