Plant suggestions

Plant suggestions

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!
Potatoes

Potatoes

life in the midwest.

life in the midwest.

Bottle brush tree

Bottle brush tree

Plant ID!

Plant ID!

Our room in Waterloo, ON

Our room in Waterloo, ON

Weekly Update- July 10

Weekly Update- July 10