Gardenias are subtropical plants that thrive in warm, humid weather. Most gardenias are hardy in zones 8-11, though a few varieties hardy to zone 7 have been developed and a few are only hardy in zones 10 and 11. Gardenias can be grown in pots and brought inside in cold climates. See How To Care For Gardenias for more information.
I planted a small gardenia bush 3 years ago. Last year I had a few blooms in the spring. Later I moved my little bush to a more appropriate location in the yard with partial shade. It has done well since the move but hasn’t grown much as it adjusts. This spring I have found several little flowers. I cut the first flower, brought it inside, placed it in a little glass of water, and took photos from all angles.