Vegamatrix Big N Sticky PK Boost 1 Gallon Increased levels of Phosphorus and Potassium Levels to Aid in the Creation of Bigger Flowers, More Sites and Increased Essential Oils Designed for Flowering Crops in High Yield Situations Use Vegamatrix Big N Sticky PK Boost during the flowering cycle of your plants when nutritional requirements are at their highest. This will help maximize those precious weeks when your plants put on the most weight. Vegamatrix Big N Sticky PK Boost is designed for use with any substrate or growing media and to be compatible with all nutrient programs. 100% Veganic, Non GMO, easy-to-use PK Boost!