Nutri+ Bloom Boost - 600 g Bloom supplement for flowering plants. NPK: 0-50-30. • Fertilizing bloom stimulant for green and flowering plants. •Big results when used in the final two weeks of Bloom. • Old school gardeners use it as a staple - tried and true! •Compatible with all fertilizer programs. Weeks of Use Application Rate Use 6 grams per 20 liters of nutritive solution. Important: Do not use as a foliar spray. Available sizes: 160 g, 600 g and 2.5 kg.