Two Notch is an interesting road. Even though parts of it are pretty industrial or heavy retail, there are still all sorts of odd little residential areas and one-off businesses. The Plant Barn (on Spring Ct. ,in between Pinestraw Road and Arcadia Lakes Drive) was one of them.
I can't say much about The Plant Barn as I'm not much of a plant person. My mother was, and I think she went there sometimes, but she never took me (I certainly would not have volunteered). I do know that for years I saw the sign on Two Notch and thought "maybe I'll turn down that road someday", but never did while it was still in business. About ten years ago, they put a little note up on their sign to the effect that they appreciated everyone's business, but were closing down.
Spring Ct. is just a spur off of Two Notch and doesn't go through to anything, but I found the other interesting business there entirely by chance and from the other side. Growing up, since I never could seem to get to sleep at night, I was very aware of the train tracks that ran between Two Notch and Formosa Drive. Trains would come through late every night with a lot of click-clacking and horn blowing. Furthermore, the "cliff" the tracks ran by had the only cave I was ever aware of in the Columbia area. Years later, on a really nice Spring day, I decided to walk the tracks from Arcadia Lake Drive to Satchelford Road. It was an interesting experience, seeing the back side of everything, including a very odd set of buildings I couldn't figure out. It turns out there's a bait farm (Springdale Bait Farm) on Spring Ct, right off of Two Notch. Who knew?