That's Central Ohio Orchid Society
I'm not even a member, but it is definitely worth checking out. It is AOS judged, so the vendors and society members will have some top-notch plants to view and/or buy
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It is being held this weekend at the Franklin Park Conservatory, on March 29th and 30th. The hours it is open to the public are 10 am to 5 pm. I'll be wearing my badge and hope to run into some fellow Geeks
