Hi - couldn't resist - I do containers professionally and a knockout is anything lime green or chartreuse with red anything. I've used red geranium (brights and the darker reds, too) with Sweet Potato vine, which is chartreuse, Creeping Jenny, which can be a little more on the yellow side if there's more sun, a little more lime green in half-day shade. Then there's Licorice plant - there are literally hundreds of limey chartreusy choices and any habit - trailing, upright, etc. I used the common names rather than latin because I think it's easier to ask for them at the nursery by common name. Ask your nursery proprietor to show you everything lime or chartreuse. It is also knockout to use the above suggestion of purple and red with the lime or chartreuse color scheme - it will make everything pop ever more richly than white. Last year in my windowboxes I used red geranium (some ivy-type), purple Heliotrope (it's habit is upright), Sweet Potato Vine, and purple petunias. If you prefer the pink/red mix it can be gorgeous - try a true bright pink with a true red on the NOT orange side - a little more to the 'blue' as suggested above. And if it's a window-box or something that can have 'trailing' plants, mix in a few ivy geranium of the same color. Salmon is a good pink if you pick a more true red or orange red geranium rather than a blue red. Hope this all makes sense! So many choices. Westy

Hi, If you cut them back, they will regrow and hopefully start to bush out more. I've just made the jump to cut back my pepper plants and now I'm seeing new shoots on both sides. I believe you have time. Do make sure when you cut them back there are no flowering buds anywhere left on the plant. You want the energy in the plant, not the flower production at this time. I've got veggie and flower seedlings all over that are starting to look like plants. From my experience, if you cut these back now to bush they may be a little smaller at planting out but in the long run your plants should grow bushier, bulk out more. Once outside I find they catch up pretty fast. Here is a link that might be useful: Pruning Geraniums

sloyd thanks for the suggestions but I don't think those will work for me - most are too dark for this space which is a long rectangle with windows only at the far end (townhouse). THe lighter ones have green undertones and while I like green it doesn't look good with the warm red and the browns in our scheme, I think. I guess I am looking for a white with warm udnertones or a cream that is not "buttery".

I don't think Agreeable Gray is too brown next to Rainwashed; I was going to suggest Accessible Beige, which is actually a little bit browner. Since your current colors are all over the color wheel, I think anything you pick will work better with some and worse with others, but I don't think Agreeable or Accessible would look really bad with any of them.