My husband wants to plant his own garden this year and he mentioned that he is looking for low growing (under 18") perennials that flower in red, yellow and blue. I am racking my brain trying to come up with suggestions and thought you all might think of something I missed. The area gets sun just about all day. Also, DH is looking for a vine to grow along a chain link fence in the same area. I wanted to give him some options other than Morning Glory and Clematis, but those are the only vines I have grown. Any help here? We are in Zone 6, just outside of Boston. Thanks for your suggestions and thanks to all who helped me with ID-ing my mantis cases!