SBM Life Science Triple Action 12 Pound Lawn Fertilizer is enriched with micro-nutrients to improve turf nutrition at every level - grass, roots and soil - for up to 3 months. By building a strong root system and richer soil below, grass grows thicker and greener above. Use it on any turf type -Spring, Summer or Fall - to support efficient feeding and greening that lasts up to 3 months. It's never been easier to give your lawn what it needs most to achieve its true, beautiful potential - all in this one blue bag.