Hundreds of orchid plants are for sale, including many hard-to-find varieties. Visit these antique greenhouses and enjoy gorgeous floral colors, shapes, and scents. Among the many varieties on display and for sale are cattleyas, laelias, oncidiums (below), Paphiopedilum, and Phalaenopsis. Their long lasting and showy blooms make orchids a dramatic addition to any indoor environment and this adaptable species can be grown in a variety of home conditions. The sale will take place October 8 – 10 from 10 – 4 at the Lyman Estate Greenhouses in Waltham, Massachusetts, and is sponsored by Historic New England.  For more information and directions, log on to www.historicnewengland.org, or call 781-891-1985.