Sensi Bloom two-part provides crucial nutrition to your plants during their flowering cycle. Extensive field testing helped us create a flowering fertilizer that results in consistently heavier yields. We carefully adjusted levels of phosphorus, nitrogen, manganese, magnesium, zinc, and calcium because blooming plants use different amounts of these nutrients than plants that are earlier in the crop cycle. Sensi Bloom has special components not found in any other two-part bloom formulas. Our researchers found that Sensi Bloom creates bigger harvests faster. If you want large, deliciously-scented, healthy flowers, use Sensi Bloom. It'll make your harvests more profitable, or you'll get your money back