It is unable to blossom before it gets fully mature. It gets mature in around 4 years.
You should plant it in fast-draining soil. It is a desert plant, so over-watering would be harmful for it. To get the plant sun shine, put it in the window, where it will get ample of sunshine. When aloe plant gets grown up and matures enough to bear a stalk, it needs lots of light to bloom.
Check the soil that it should get completely dry before you water your plant again. Don't water more than a cup or two in winter season.