Cos Cob, Conn.: Sixth Annual Dazzling Dahlias Show. Sponsored by the Garden Education Center of Greenwich, the show promises the visitor a fabulous sea of exceptional blooms that range from tiny buttons to huge dinner-plate size stems in an array of stunning colors. It is truly a sight to behold. All dahlias will be sold on the final day of the show. giving the public a rare opportunity to own prize-winning blooms. Become a member of the Greenwich Dahlia Society by contacting the Garden Education Center at 203-869-9242 or www.gecgreenwich.org. Free. 1-4 p.m. Also Sept. 22: 10 a.m.-3 p.m. Garden Education Center of Greenwich, 130 Bible St. 203-869-9242 or www.gec greenwich.org.
Pomona: Japanese Maple Exhibit. Through mid-November. 9 a.m. to 5 p.m. every day. Free. Down to Earth nursery, 1040 Route 45.
Piermont: Farmers Market. 9:30 a.m. to 3:30 p.m. Sundays till Nov. 24. downtoearthmarkets.com. M&T Bank, Piermont Avenue and Ash Street (at 527 Piermont Ave.). 914-923-4837.
Ramsey: Farmers Market. Sundays till Nov. 24 from 10 a.m. to 2 p.m. www.ramseyfarmersmarket.org. Eric S. Smith Middle School, 73 Monroe St. 201-785-2313.
Redding: Open Days Program Garden Tour – Fairfield County. Self-guided tour of three private gardens in Greenwich, Redding, and Weston, open to the public for self-guided tours to benefit the Garden Conservancy. No reservations required; rain or shine. Begin at the In Situ garden or see website for additional locations. Highlights include an extensive dahlia collection, a rustic stone grotto, a formal terrace and boxwood parterre, water features, sculpture, woodland walks, and planned meadows of native plants. 10 a.m.-4 p.m. $5 per garden; children 12 & under free. In Situ Garden, 73 Diamond Hill Road, 888-842-2442.
Spring Valley: Farmers Market. 8:30 a.m. to 3 p.m. Wednesdays until Nov. 20. Call 914-923-4837. downtoearthmarkets.com. Memorial Park, Memorial Park Drive. 845-352-1100.
Nyack: Farmers Market. 8 a.m. to 2 p.m. Thursdays till Nov. 21. Veteran’s Park, Main Street.
Stony Point: Master Gardener Demonstration Garden Tours. The Master Gardener Volunteers of Cornell Cooperative Extension of Rockland County invite the public to attend their monthly tours of the demonstration gardens at the Cornell Cooperative Extension Education Center. Visitors can tour the beautiful gardens and learn which plants grow best in Rockland County. Gardens included are: The Ralph Snodsmith Perennial Garden; Hillside and Shade Garden; Fern Garden; Herb Garden; Ornamental Grass Garden; Cutting Garden; Container Gardens; Native Plants; and the Rain Garden. 1-2 p.m. Also Oct. 27. Free. 1-2 p.m. 10 Patriot Hills Drive. 845-429-7085.
New City: Family Sundays. A family farm experience for children ages 4 and older accompanied by a parent or guardian. The program is offered on the first Sunday of the month. Activities include farm tours, a seasonal activity using natural materials and a chance to work alongside the farm team. Register at familysundaysatcropseyfarm.bpt.me Call 845-634-3167 or email firstname.lastname@example.org. $10 first child; $5 each additional child per family. 10-11:30 a.m. Cropsey Community Farm, 220 S. Little Tor Road. 845-634-3167.
Chappaqua: Open Day. Tour Rocky Hills — the garden of William and Henriette Suhr. Noon to 4 p.m. 95 Old Roaring Brook Road. Admission is $5 per garden. For directions and descriptions of the gardens: www.gardenconservancy.org or 845-424-6500.