Peekskill: Garden Club of Peekskill Standard Flower Show. Theme: Holidays at the Herrick House — Then and Now. Free. 11 a.m.-4 p.m. The Peekskill Museum, 124 Union Ave. 914-739-6632.
Peekskill: Garden Club of Peekskill Standard Flower Show. Theme: Holidays at the Herrick House – Then and Now. Free. 1-2:30 p.m. The Peekskill Museum, 124 Union Ave. 914-739-6632.
Chappaqua: Chappaqua Garden Club. Speaker: Patty Fries, floral designer with Plants and Things Design Center in Mount Kisco. Topic: How to use color in floral arrangements for the fall and winter holidays. Free. 12:45 p.m. First Congregational Church, 210 Orchard Ridge Road. 914-242-3799.
Tarrytown: Saw Mill River Audubon Society. Speakers: Trudy Battaly and Drew Panko. Topic: Little-known owls: Saw-whets. $5. 7:30 p.m. Rockefeller State Park Preserve, Route 117. 914-631-1470.
Congers: Rockland Audubon Monthly Program. Speaker: Manna Jo Greene. Topic: Diminishing fish populations, development along the river and its impact on wildlife and ecology. Free. 8 p.m. Rockland Country Day School, 34 Kings Highway. 845-639-9216.
White Plains: Greater Westchester Orchid Society Meeting. $25 membership. 7 p.m. Ethical Culture Society of Westchester, 7 Saxon Woods Road. 973-420-4966.