By Carrie Knutson, Horticulture agent I love zinnias. They are one of my favorite flowers. I interplant long rows of zinnias with my pumpkin and squash plants every year. Last year, as I was weeding the rows, I noticed a plant that had a striking difference from the rest. The plant was variegated. It had green leaves with strips of light-green and cream colors. Not missing the chance to experim...