Too Late To Plant Seeds?

Too Late To Plant Seeds?

I'm thinking it is, but I really want to go out and plant these. I picked up a package of Purity cosmos and a package of red poppies the other day, because I'd been looking for some white cosmos (as opposed to the mix, or just the pink) and I haven't had much luck with my transplanted poppies this year. That and I happened across these seeds in the local hardware store quite by chance. I'm in zone 4, and of course with it being mid-July at this point, I'm wondering if I shouldn't just wait until next year. It rained so much however, that it's not like anything really took off, of the stuff I did plant. What would you, my esteemed fellow gardeners, do?
pictures and a few questions

pictures and a few questions

New Dining Area

New Dining Area

Bookcase Makeover

Bookcase Makeover

Hello…

Hello…

Lamps and Stuff

Lamps and Stuff

some of the lilies i spoke of yesterday :)

some of the lilies i spoke of yesterday :)