This image was created by Rick Thompson and is available for purchase in a variety of sizes through IStock.
Medical marijuana, grown in Michigan, in a jar with rainbow background. Vertical shot with room for ad copy.
Click on the image to view it in greater detail, or to make a purchase.
http://www.istockphoto.com/photo/medical-marijuana-in-a-jar-with-rainbow-background-gm483067134-70401671