Hmm. Urban guerilla gardening …

If I were to walk around with a shaker full of seeds to sow in city cracks and barren spots, what should be in that shaker?

Replies suitable for Toronto are invited!
(I.e. hardiness zone 6 or lower, drought tolerant.)

These are some I've seen growing in cracks here:

Marigold
Cosmos
Thyme
Something else, add a comment!
Poll ends at .
@deborahh Marigold and cosmos and both beautiful and very hardy. They are drought tolerant and need no maintenance, and aren't invasive. Consider also violas, aka Johnny jump ups. They have cute little faces, self-seed (but also aren't very invasive), and do just fine without maintenance.
@WanderingHuman got it. That was the question i knew I'd need to research: what distinguishes native johnny jump ups from hybrids. Now I know the species (?) name as a starting point. 🙂 Thanks.