There are several reasons why your African Violet may not be blooming. Under normal conditions it should bloom year round. If it isn't blooming the first thing to check would be the light. It may be that the African Violet isn't getting enough light. Try moving it to a bright window or try to put it under florescent growing lights.
Another thing to try is giving it a bit of fertilizer. Every time you water it, give it a bit of fertilizer. Dilute it to ¼ the strength listed on the packaging. Sometimes repotting the African Violet will give it the boost it needs to start blooming again. Do this only if it has been in its pot for a long time.
Sometimes African Violets will get suckers on them the will use up all of its energy and keep it from blooming. Try removing these suckers, and see if it starts to bloom. African Violets also bloom best when they are root bound. So, you will want to make sure it is potted in a pot about 1/3 the size of the plant.
If you are having issues with your African Violet not blooming make sure to give these tips a try.
