Don't you mean "not a single plant has bloomed"?
"African Violets" will bloom when the evening temperature is cooler than the
day temp. That is why they tend to bloom best when grown in bay windows. It
may also be possible you have over fertilized your plants too.
Try this link for info on growing "African Violets".
"Marc Tardif" <intmktg at Gloria.CAM.ORG> wrote in message
news:Pine.LNX.4.10.10012031522520.31795-100000 at Gloria.CAM.ORG...
> I live in Quebec and keep a few Saintpaulia (African
> Violets) next to a stained glass window, so there is
> often light during the day but never too bright. The
> problem is that it's been over a year now and not a
> single flower has bloomed. I tried adding fertilizer
> but I'm still stuck with leafs only. Any ideas what
> can possibly be wrong?