the first two are for the same plant. the branches are purple/blue when new. older ones are more brown and wood looking. this plant flowers late spring, early summer. the 3rd is a random weed looking plant i found, and all of it look like the one stem you see. 4th is also a random weed, growing in areas that get more water. there are long grass leaves with dark green ridges, seemingly fussy looking. 5th is a weedy flower also growing in wetter areas. similar grass like leaves. and yes, there is a random spider hiding behind the flowers, luckily i didnt notice it while photographing it! >.< if anyone knows what any of these are, please let me know. the first plant is just so pretty, i would love to be able to buy more. its also not in anyones garden, as far as i can tell its wild growing. and trees and such dont really grow too close, even though its been there for 10+ years.
You'll want to be cautious about which sumac you plant; one variety is known for being a contact-irritant (look up Poison Sumac, Rhus vernix). Other than that caution, go right ahead and plant it - they're lovely bushes. The one in the picture looks more like Rhus typhina, Staghorn Sumac. We actually have a volcano and national park in Ecuador named for sumacs, which are called Sumaco in kichua.