Heaven Hill Farm, Vernon Wed-Fri, noon–4 pm; Sat-Sun, 10 am–6 pm. Free. 451 Route 94. Demarest Farms, HillsdaleWeekdays, 3–4:30 pm;Sat–Sun, 9 am–4:30 pm thru November. $7 admission includes hayride and petting zoo. 244 Wierimus Rd. Tranquility Farms, AllamuchySat-Sun, 10 am–5 pm through Halloween. Free; $2 hayride to pumpkin patch. 10 Tranquility Farms Lane. Donaldson Farms, HackettstownDaily, 8 am–5 pm; hayride to patch only on weekends, 10 am–5 pm. Free. 358 Allen Rd.