BARTRAM’S GARDEN— Visit the oldest surviving botanical garden in the United States and the former homestead of famed botanist John Bartram, now serving as an outdoor classroom and living laboratory. Take a walk through the Common Flower for an unforgettable view of the city skyline. Free. Open daily, dawn to dusk. www.bartram sgarden. org. 54th St. and Lindbergh Blvd., 215.729.5281. THE FAIRMOUNT PARK HORTICULTURE CENTER &
CENTENNIAL ARBORETUM— Built in 1979 on the site of the former Horticultural Hall, an 1876 Exposition building, The Fairmount Park Horticulture Center has indoor and outdoor splendors for horticultural enthusiasts. The Horticulture Center features a visitor center and greenhouse, while the arboretum hosts ponds, a Japanese maple collection, an evergreen collection, sculptures of poets and musicians and plants of all types. Free admission; donations accepted. Open to the public seven days a week. Greenhouses: Daily 9 am-3 pm. Arboretum: Daily 9 am-5 pm. www.fairmountparkconservancy.org. 100 N. Horticultural Dr., 215.685.0096.
LONGWOOD GARDENS— A horticultural paradise with 1,050 acres of gardens, woodlands, meadows and 20 indoor gardens, plus an extraordinary “Nature’s Castles” tree house exhibit. Frequent live musical performances throughout the month. Tickets: $10-20. Open daily 9 am- 6 pm. www.longwoodgardens.org. 1001 Longwood Rd., Kennett Square, Pa., 610.388.1000. MORRIS ARBORETUM OF THE UNIVERSITY OF PENNSYL
VANIA— The 92-acre Morris Arboretum is an everchanging horticultural wonderland, with its display gardens featuring a spectacular collection of rare and mature trees in a Victorian landscape. Tickets: $8-17. Open M-F 10 am- 4 pm, Sa-Su 10 am-5 pm.
www.morrisarboretum.org. 100 E. Northwestern Ave., 215.247.5777.
PENNSYLVANIA HORTICULTURAL SOCIETY— The organizers of the annual Philadelphia International Flower Show host educational exhibitions and lectures in their Center City headquarters. Visit website or call weekdays from 9 am-5 pm to find out about exclusive events like tree and garden care classes, green roof tours and garden festivals. www.phson line.org/events. 100 N. 20th St., 215.988.8800. Map 1, G4