Illinois lies in USDA plant hardiness zones 4b to 6, with winter low temperatures of minus 25 to 0 degrees Fahrenheit. Flowering dogwood (Cornus florida) grows wild only in the southern half of the state. Pagoda dogwood (Cornus alternifolia) is a 15- to-30-foot dogwood tree native to northern Illinois.
About this Author
A freelance writer, Judy Wolfe has owned Prose for the Pros, a freelance writing business, since 2006. She's been an inveterate traveler since 1961 and draws on her travel experiences to provide articles for such websites as Chincoteague Island Vacations and Berlin Dude. Wolfe holds a Bachelor of Arts in literature from California State University at Pomona.