Went: Thursday, July 23, 2015, 6:30 p.m. (84/100)
I believe the TBG is a part and located inside Edwards Gardens. Besides visiting Allen Gardens shortly, the only pretty flowers and plants I saw were in people's gardens and local parks. The gardens are very picturesque and I can see why people would want to take their wedding pictures here.
So my experience was a 5.0, but my unbiased rating would be a definite 4.0 stars.