Perennials: I need more color, 1 by robertsonj88

robertsonj88 wrote:
Any suggestions as to what plants to add? Apparently I have a thing for purple! I want something orange, or red... or maybe a yellow or lime green something. lol
The hydrangea in the middle is Invincible Spirit and the two on the outside are Annabelles.
Also, would my ground cover plants (burgundy glow ajuga and galium odoratum) eventually kill off my other perennials? I didn't really think through my garden, just planted what I liked.
Oh yeah and I am in zone 3.
Thanks!