Trifecta is a natural base, premium blend fertilizer. It lasts all year long (if properly applied) and will increase flowering production as well as root growth, plant health, and produce larger, healthier, more nutrient-rich vegetables. Trifecta contains fast-acting and slow-release nutrients, as well as over 70 trace mineral micronutrients and beneficial bacteria and fungi! For a well rounded all purpose fertilizer!  **15 pound bags can not be shipped out of the US due to customs weight restrictions. 15 pound bags ship separately from other items** Check out our Youtube Video on Trifecta