ideas on blooming plant to complement coreopsis moonbeam??
We have two narrow ground level planter beds around our patio. We have already planted some lavendar and moonbeam coreopsis, but want some perennial [not too tall]to complement and fill in middle spaces with perhaps a purple, pink, or white blossom. Last year we had tried some Kobold but it got about 4 feet tall [we have good soil] and looked ridiculous shooting up that tall among lower plants. We thought it would only get at most to 2 to 2 1/2 feet tall. And then I tried filling in with some evening primrose, not knowing that it is a "take over" plant. I plan on taking out as many primrose roots as I can this week while it is still cold. We had a very warm spell, but now weather is supposed to go back to winter temps - great time to do war on plants like thisâº. I know everybody is probably busy, but would appreciate any input.