by Connie Oswald Stofko You can now get mature bonsai, bonsai starter kits and bonsai supplies at Mischler’s Florist and Greenhouses, 118 South Forest Rd., Williamsville. As we learned a few years ago, bonsai (pronounced bone-SIGH) is created by pruning and training a tree over a period of years to keep it small while giving it the form and shape of a mature tree. If you’re a beginner, you may enjoy the starter kits. If you’re already in the process…