Four o'clocks come to mind as well as scabiosa. Also, chocolate daisy (smells like chocolate, too). These will bloom all summer to frost, as long as you deadhead them. None of these are invasive IMHO. If you like roses, what about a mini?

Have you been to Precure yet? I love their plants, and they are very helpful, unlike a lot of nurseries where you are left to your own device. I'm assuming you're in OKC, though.

TLC, of course, has a huge selection of plants, but hard to find anyone to help.

Does it have to be a plant that blooms, or could it be something that has fantastic foliage, like the sun coleus? You can often find these with bronzy, black foliage that might compliment your other plants. It is an annual, but not very expensive to purchase.

I have a beautiful Salvia 'Black & Blue', that is just a gorgeous dark blue bloom with a black calyx. The hummers love it, too! Would look good with your golds and pinks. It is hardy in our zone.

Or, you could find some dwarf grasses that would add texture, but don't spread around a lot.

Susan

Thanks Susan for trying to help. If there were some better nurseries where I lived it might be easier, but they all have the standard fare and I'm not in OKC. The key to this spot is the full sun and moist to wet soil. I have had (for example) Columbines, roses and Daylilies in this spot before and it was just too darned wet for them especially in the spring. Salvia might work, but I think most of them like dry soil don't they? (or are invasive if they don't-as in bog sage). Everywhere I look it's drought tolerant plants for full sun. Well this isn't a droughty spot (and if it becomes dry I can add water, but I can't subtract it). BTW, I didn't "splain" myself very well. It doesn't have to bloom from early summer until fall, it just shouldn't bloom in early spring. I appreciate your input and taking the time to post for me....Maryl

I've got it - Veronicas. They usually get between 1' to 2' tall, and come in whites, blues, purples, and pinks. Very easy care perennials. I've got V. 'Sunny Border Blue' in my garden next to my Joe Pye Weed, which loves moisture.

Susan

Very good Susan. I grew Veronica Sunny Border Blue years ago and it did very well. Not long lived (about 2-3 years) but I'm guessing it was because it bloomed it's head off. Do you think it will take this moist soil? I also thought about a low growing Spirea such as Snow Mound. Hummm.....If your brain comes up with anything else, I'm listening.