Not sure how I want to word this... How about starting some seeds indoors in middle summer and plant the plants in fall? Certain things would be ok, right? But what? Hollyhocks?

Perennials?

And what about starting some bushes now from seeds and let them winter dormant in pots in the garage during the winter? I'm thinking bushes like mulberries, mock orange, current, rose of sharon, etc....

I also got some crabapple seeds in a trade; I'd love to try growing trees!