Sure to brighten any room in your home and bring a little extra joy to your day, the Lambertville Sunflower Festival is the perfect way to do just that. Lambertville Sunflower Festival Dates and HoursRead More: One of New Jersey’s favorite summer art festivals returns to CollingswoodGet ready to join in on the fun! The 2026 Lambertville Sunflower Festival will be held on weekends from Aug. 15 through Sept. 13, plus Labor Day weekend. Festival hours are weekends from 10 a.m. to 6 p.m. and weekdays from 11 a.m. to 6 p.m.View this profile on Instagram Bellemont Farm (@bellemontfarmnj) • Instagram photos and videosThe Lambertville Sunflower Festival is located at Bellmont Farm, 22 Valley Road in Lambertville. See the latest 2026 schedule Please check back often as additional street fairs may be added or revised as the year progresses.