I bought 3 brown-eyed susans this year, and each one turned out looking a bit different. One has a double row of petals, and one looks like a normal brown-eyed susan, but its flowers are gigantic compared to the ones I am used to seeing. I looked them up on the internet and saw that there are several different varieties. When I bought my plants, I didn't even notice that the neighbors had brown-eyed susans growing in their half of the yard. When they were away on vacation, I discovered yet another variety. These ones have burgundy streaks on their petals.