Periwinkle! All you need to know to enjoy this one is the name! Of course, it's so much more. Spreading, spreading, spreading until it takes over your whole shade area. How could there be a better cover for those areas? Then it gives us some of the very first flowers we see each spring. It's hard to resent it spreading to the wild, particularly since it mostly stays in its chosen patch. Periwinkle has been reported wild from AL, AR, AZ, CA, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, NE, NH, NJ, NY, OH, OR, PA, RI, SC, TN, TX, UT, VA, VT, WA, WI, WV, BC, NB, NS, ON, and QC. Lenawee Co MI, 5/8/14. Dogbane family, Apocynaceae.