Green Planet GP3 Bloom 5L GP3 Bloom is the component of the GP3 nutrient system that provides your plants with the right nutrients they need in the flowering stage of growth. This stage is when your plants start to fruit and produce flowers up until it is time for harvest. But in order to maximize their yields, they need the right formula. The Bloom formula contains no synthetic dyes and contains only ethically sourced ingredients to ensure your plants are getting the highest quality nutrients possible. These include high amounts of phosphorous and potassium (K), which plants require to thrive while flowering. Phosphorous is vital for essential plant functions and flower formation to deliver larger yields. Potassium helps convert phosphorous into energy your plant can use and strengthens cell walls to support heavy flowers. When used alongside GP3 Micro and GP3 Grow, your plants will receive the primary, secondary, micro, and macronutrients they need for a bountiful harvest. This unrivaled 3 part nutrient system consists of a combination of primary, secondary and micronutrients in three separate formulas: Grow, Micro and Bloom.