The Brooklyn Botanic Garden is holding its annual benefit Plant Sale, starting today and running through tomorrow. The sale is the largest of its kind in the Northeast and takes place on Cherry Esplanade (currently covered with pink petals). The sale boasts over 20,000 plants, a bonsai workshopw, BBG horticulture experts on hand and little red wagons ("plantsportation") to help consumers tote around their finds. If you attend, try to seek out an orchid;......