What non-veg plants should I plant around my front yard vegetable garden for curb appeal?

I want to put a vegetable garden in the area right in front of my porch since it gets the best light. The beds are roughly 13ft x 5ft but due to the side walk, one bed slopes 8 ft in. I plan on doing 2 ft X 8 ft raised beds for the vegetables and then do non-veg plants around the boxes to conceal them and give it color in non-growing seasons. What plants would you suggest for outside the box? I live in zone 7 and would like a mix of evergreens and flowers. Thanks!