"It's the most exciting thing happening on South Beach," Commissioner Nancy Liebman says about the renovation of the once-decrepit Miami Beach Botanical Garden adjacent to the city's convention center. Well, that might be a bit of an overstatement, but this pocket-size garden is certainly going to be a fun thing to watch grow. Over the past year, more than 100 volunteers have weeded, hauled, pruned, potted, and planted an overgrown four-acre plot, which includes a Japanese garden, a glass conservatory, and ponds, turning it into a lush little attraction that even most locals don't know exists. Now that the garden is being spruced up, more events have been scheduled, including plant sales, classes in orchid and palm growing, concerts, and workshops sponsored by the Florida Master Gardeners. Another draw is the intergenerational vegetable garden, which joins kids with old folks to harvest peppers, lettuce, tomatoes, and herbs. A charming gift shop features homemade jellies, jams, flavored vinegars, and other edibles in addition to postcards and books. The best part is that while the renovations continue (at least until the new millennium), admission is free. The garden is open weekdays from 9:00 a.m. until 5:00 p.m., Saturdays from 9:00 a.m. to 4:00 p.m., and Sundays from noon to 4:00 p.m.