I figured they had some sort of fruit since there are gardenia seeds but I hadn't bothered to really investigate since I figured I was no where near the flowering stage with how young mine are. I googled and here are the fruits!I mentioned your growing/seed starting to a colleague and she said that some gardenias produce a fruit. We happened to be standing in front of a thunbergia vine at the time coincidentally. I'm pretty sure the gardenia I have is some kind of jasminoide. I usually deadhead, but now you have me wondering about it.