New Englanders have been growing decorative plants for centuries. Many large estates in the Boston area featured large glass greenhouses and significant collections of camellia trees. Discover the rich history of camellia cultivation from the late 1700s through the 1900s at this illustrated lecture by Lyman Estate Greenhouse Manager Lynn Ackerman. The event will take place Saturday, March 7 beginning at 2 pm. Afterwards, visit the 1804 Lyman Estate Greenhouses and enjoy the large camellia collection in bloom.  $5 for the public, free to Historic New England members. Registration required by calling 617-994-5912. Program will take place at the Lyman Estate mansion, 185 Lyman Street in Waltham. This lecture is part of the camellia blooming season and sale, running through March 15, Wednesdays through Sundays, 9:30 am – 4:00 pm.