PLANTS: This weekend, marvel at tiny trees. The World Bonsai Day Festival runs from Friday through Sunday, and will feature exhibits, lectures, demonstrations, workshops, and more. Visit the newly reopened National Bonsai and Penjing Museum to learn about these living works of art. Vendors will be on site, should you decide to try your hand at growing fancy shrubberies. (U.S. National Arboretum, 10 a.m.- 5 p.m. FREE) [ more › ]
