Want to know the basics behind green roofs? Join master gardener Stephanie Alarcon on Saturday, January 14 from 9:00 a.m. to 11:00 a.m. at the Horticultural Center in Fairmount Park for a discussion on the fundamental issues in green roof planning. Topics include structural requirements, examples of pre-fab systems, plant choices and local green roof experts to contact. Registration ($10) and refreshments begin at 9:00 a.m., and the workshop commences at 9:30.

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