I like Magellan Scarlet zinnia. The Magellan series are 'dwarf' zinnias, but their flowers are ample. This is an eye popping red.

Aster chinensis... the tall varieties

Cosmos bipinnatus... the dwarf varieties

Nasturtium "Empress of India "...

they all will bloom till frost and are pretty easy to grow from seed and mostly come true from seed if you want to save the seeds for next season...

Cheers~

Izhar

Do you really want to start from seed at this late date. The earliest you will have flowers is mid July and that's stretching it. Being late in the season you might be able to snag a deal on nursery plants.

oilpainter, I'm planning it for next year.

Thanks for all the plant names. I really appreciate it. :)

OK if you are planning for next year how about
Annual phlox. Petunia, cockscomb Celosia, Geranium, Zinnia, and Whirlibird Nasturtium.

Geranium!!

I *love* geraniums - love the fact that I can get a big impact from not a lot of plants, and some of those colors are screamin'. I save mine over the winter every year - you can do a board search and old posts will come up how to do that - and they just get bigger and better every year.

Geranium are very easy to start from seed in my experience, and red cultivar shouldn't be difficult to find in any of the good seed houses.