All pruning is dwarfing to some extent. Summer more so than dormant. So pruning at this point would be for tree structure. If you want more branching on cherry head it back next spring. Otherwise train the branches where you want them.

There are more complicated cherry pruning systems. Some very complicated. If you want that you need to read professional instructions. Some of it makes my head spin. But I've grown good cherries without much fuss.

I would not prune now, August 1st sure, but now I would be worried about weak growth and the coming winter. I'm a little north of you though. Summer pruning makes a lot of sense, mostly because of fugal diseases. In spring make sure you spray copper after prunning. Both really need to be done. I prune for size in the summer. Structure in the spring.

This post was edited by Drew51 on Tue, Aug 27, 13 at 0:08

I prune in July, after picking, to head back branches that are growing out of my reach.

Thanks, y'all! I'll just do the recommended sprays and leave the pruning till after winter. There's not a lot of it to be done on them anyway. I took a good look at them, and they won't need a lot then.