628-5798, off AZ Hwy. 77 (Oracle Rd.) just north of Tucson. Daily fee $6/car, 5 a.m.–10 p.m. Visitor center 7 a.m.–5 p.m. daily. Camping $15–$20. Allow 2–4 hours.
Stop at Ranger station before entering the park to pick up field information on the plants and animals living here. Excellent trail system. Romero Trail follows a wash and running creek—usually a good site for viewing an assortment of plants.