We'll get some warm weather soon. I understand your concerns as I have some started as well and they have not grown much. I would leave them be, and see what happens. You could also start more now, and more by winter sowing to be transplanted in the spring. Check out the winter sowing forum. They are self seeders so trust in mother nature. We sometimes have to try to fool her though.

Are they the perrenial or annual variety?

-Audric

Ordinary, standard black-eyed susans are usually perennials and just keep getting bigger and bigger every year. I didn't know there were annual ones.

Wow! Lee, I really admire your determination to be a gardener under what sound like pretty difficult conditions. You call it guerilla gardening, we call it "extreme gardening", you know, like extreme sports or whatever. We are in Ottawa, Canada. July 17 - it was 28 degrees - sorry, that's Celsius, so high 80s Farenheit to you. I hope your Black Eyed Susans are doing better now. Mine are lovely and some are those great big ones that have maroon in the centre. Do you grow Achillea, Alchemilla (aka Ladies' Mantle) Astilbe, Campanulas, Centaureas, Columbine, Coneflower, Coralbells, Daylilies, Dicentra (aka Bleeding Heart) Geranium (the perennial plant, not the houseplant) Hostas, Jacob's ladder, Lily of the vally, Lychnis (or rose campion) Monarda, Nepeta or catmint, Peonies, Phlox, Sage (the perennial ones), Sedums, Valerian, Verbascum, Veronica, Violets, Yucca? All of these are very, very cold tolerant.

Best of luck to you!

I have a perinnial garden. Absolutely everything in it, I've started from seed.
I have found that with perinnials, the first year you may get some blooms, but next year you will be amazed at the show!
Mark each new plant with a small stake, so you will know next year that you have something growing that is not a weed! (I learnt that the hard way!)
Happy gardening, I live in the Parklands of Manitoba, and whatever grows in my garden has to be tough!
~~P'tuny