Top-to-right, then top-to-bottom:

1. Mexican Hat
2. Red Morning Glory
3. Dogweed
4. Wallflower
5. Sweet Four O’Clock
6. Prickly Poppy
7. Eyed Gilia
8. Crag Lily
9. New Mexico Hop
10. Heartleaf Morning Glory
11. Purple Geranium
12. Red Cinquefoil