they become somewhat arboreal...but only in so much as spinning web all over the place and staying in it. so if it silks up a piece of cork bark at the top then its going to pretty much stay there. also...it wont take it long to start webbing up everything. they dont have to be adults. 3 of mine started doing it at about 1 1/2". the other 4 at around 2"does know bodys act aboreal? they do have a tendancy to become aboreal?
iv got a spiderling, and she doesnt spen too much time on the floor, just on her webbing on her cork bark. i know they webb loads when adults, its a curious thing.