greenhouse super ghetto "kick down" greenhouse. carpenter advice appreciated

[queequeg152]

someone in the office next to mine was throwing out some 2x2's that were EXCEPTIONALLY straight... they were stamped "stud" and were a slightly darker wood?
anyway ... am i missing something here? are there like different grades of 2x2's? if so where can i go to get these exceptionally straight pieces? id be willing to shell out 2$ per as opposed to 1$ per lol.
id totally call the lumber yard around here, but alas i dont want to sound like a noob!

ill put some pictures up some time this week.

 

[queequeg152]

oh snap! 36 degrees on monday night! time to put up or shut up.
im done for the semester till exam's so this is getting done this weekend.

on the other hand im lazy as all hell so it might not.

Edit: got it DONE... pics to follow shortly.

 

[queequeg152]

heres where it is atm. about 90% there.. .need to go back to lowes for a few more pieces of 2x2 to finish out the door.

ill get a better pic when its daylight out.

anyway, took another 6 or so hours to finish out the all the framing, and another 2 or 3 hours to get all the plants situated and rehung.

giant jolokia plants... these got prunes because they do not fit.

heres all the pruning carnage.

snaged a triple 4(left) and an Ace F1(right) for a salad.