Celebrate orchid-blooming season Friday, October 23 – Sunday, October 25, from 9:30 – 4 each day, at the Lyman Estate Greenhouses, 185 Lyman Street in Waltham. Hundreds of orchid plants are for sale, including many hard-to-find varieties. Visit the greenhouses and enjoy gorgeous floral colors, shapes, and scents. Among the many varieties on display and for sale are cattleyas, laelias, oncidiums, Paphiopedilums, and Phalaenopsis. Their long-lasting blooms make orchids a dramatic addition to any indoor environment. This adaptable species can grow in a variety of home conditions. Staff are on hand to offer expert advice. Free admission.  Historic New England members enjoy 10% off all purchases. In honor of the sale, the greenhouses will be open for tours on Saturday from 10 – 1, on the hour, with the last tour at noon. For more information, call 781-891-1985, or visit www.historicnewengland.org. Image from www.anthuriums.us.