Indoor Gardening and Houseplants: Gardenia: Need advice about care, 1 by Garden_Healing

Garden_Healing wrote:
I couldn't resist buying a gardenia at the Boston Flower Show even though I know they need tons of light and I have no good southern exposure here. I've never had a gardenia survive me before. So far I think I understand that they need lots of water (this one seems to require daily watering) and light (I am trying to use fluorescent lighting to boost indirect light from window). My plant blooms well but the blooms turn yellow within a few days. Also I am noticing a few bottom leaves with black spots... any ideas?

Thanks for advice. Attached is the gardenia when I bought it. I will follow with pics of the current state of affairs.