It's possible to have early blooms the first year. Lavender seeds break dormancy when stratified. Roll seeds in a damp paper towel, put in a freezer bag and let sit at room temperature for a few hours. Place sealed bag in the freezer overnight. Thaw, sow in pre-moistened soil mix and place under lights. The seeds will germinate within a few days and will bloom by mid-June if you sow them the end of February. Lady Lavender is a consistent first year bloomer.