Here in southern Michigan, all the dogwoods are finished blooming. But if you go north! On our trip, roughleaf was the one we saw most often. I've seen it blooming into July in the Keweenaw. Roughleaf and other dogwood twigs are winter browse for mammals ranging from deer to mice. The Ojibwa smoked the bark, and the Iroquois used it to treat ailments as different as kidney problems and tuberculosis. Roughleaf dogwood grows in CT, DE, IA, IL, IN(R), KY, MA, MD(E), ME, MI, MN, ND, NH, NJ, NY, OH, PE, RI(S), VA, VT, WI, WV, MB, NB, NS, ON, PE, and QC. Emmet Co MI, 6/18/21. Dogwood family, Cornaceae.