If you can find some of the large pots of petunias like Pink Wave, they come easily from cuttings (it's probably too late to start seed now). I'm also fond of the signet marigolds-- lemon odor, not the usual marigold stench, and they come easily from seed. If you need short stuff, both parsley and sweet alyssum make good edging. I start them in flat pans, then just cut up the block of soil and sprouts with a knife rather than try to transplant from pony packs. Borage is also fast from seed, but rather coarse... in Iowa, with similar summer climate, I would run the lawnmower over the borage, parsley and sweet alyssum about mid-July when they started looking tacky, and they'd be looking good again in August. Lobelia cardinalis, cardinal flower, is a nice one if you have some wettish areas. And Phlox drummondii and Cleome are both easy and fast from seed. Kay Lancaster kay@fern.com who just got her Chiltern's order today. just west of Portland, OR; USDA zone 8