Organic and natural are two words that describe Barb Stettner, 2010-11 president of the O’Fallon Garden Club. Throughout her extensive backyard, Stettner uses sustainable methods to cultivate flowers, plants and vegetables.  Stettner draws inspiration from the women in her family. Her German immigrant mother-in-law, a workaholic, nourished a small, but vibrant garden chock-full of every flower imaginable.   Her grandmother, a share cropper from Tennessee, grew vegetables such as purple-hull peas, mustard greens and butter beans, among others. Another grandmother grew moss roses. Stettner …