I'd just leave them be. If the sog is really dead cutting it off will have no effect on axillary buds lower down. Dead tissue is effectively cut off already. It's only by cutting back live tissue you can redirect the plants' energies. If they are going to resprout they will. And if not not. The only reason to cut off the dead bits would be to let air and light in and to remove any parts with fungal infections. But on 1200 plants I can't see the advantage.

I bought the seeds from several different places. I bought two native wildflower seed mixes that didn't specify which species were included - I bought one of those from some box store like Lowe's or Home Depot and one from a local native plant nursery. I also bought seed packets of particular species (Clarkia unguiculata, Collinsia heterophylla, and Erysimum capitatum) from Everwilde Farms. When I buy actual plants instead of seeds, I usually buy them from local native plant nurseries. You can use the California Native Plant Link Exchange to find nurseries near you that sell native plants and to find plants that are native to your local area. Here is a link that might be useful: California Native Plant Link Exchange

I haven't seen it around here, but most of the garden centers I visit are just starting to get stock in. The wholesaler in the link lists Logan's, Homewood, and Atlantic Ave in Raleigh as retail outlets for their products, so I'd start with a few phone calls there. If they can't get it for you, Joann Currier at The Unique Plant in Chapel Hill might be able to do a special order for you. I haven't been over there for a while but I used to stop by regularly, and she's offered to help me track things down in the past. The wholesaler's website lists her as one of their retail outlets, too, so it looks like she does business with them. Here is a link that might be useful: The Unique Plant

Hello: I really goofed at the Spring Swap last year. I had arranged a trade ahead of time & then forgot to record the swap. I had promised several sorts of ornamental grasses & was supposed to receive some tomato plants, some pepper plants & a dark purple iris. The end result was that I got the plants that I was looking for & the other lady left empty-handed. And, I can't remember the lady's name now. So, if this sounds familiar, please drop me an email. I should be able to attend the spring swap on Saturday. Cheers, Dan