Sasha Crotty, vice president and past president of the Massachusetts Orchid Society, will give an introductory talk, “Orchids 101,” at the Peabody Institute Library, 15 Sylvan St., on Saturday, Jan.

Orchids (Orchidaceae) are flowering houseplants beloved for their wide variety of colors and delicate-looking blooms. There are more than 28,000 orchid species known, and each can thrive for years ...