Base Nutrient

FloraPro Liquid Bloom B

FloraPro™ Bloom B is used with FloraPro™ Bloom A to complete the flowering base of the FloraPro Liquid Program. Built for high-intensity commercial flower and finish, Bloom B helps deliver N-P-K, calcium, and micronutrient support as part of a two-part liquid system. Together, Bloom A and Bloom B provide the core flowering base that works with PK+ to support generative development and a controlled finish.

FloraPro Bloom B (1-5-5) is the B-side component of the FloraPro two-part flowering base system. When used with Bloom A, it helps provide the core flowering nutrition required for heavy-feeding crops. The Bloom A/B system is designed to support flower formation, calcium delivery, and the FloraPro Liquid Program’s shift toward lower nitrogen delivery later in flower.

Use FloraPro Bloom B with FloraPro Bloom A as part of a continuous liquid feed program for hydroponic use only. Do not use Bloom B as a standalone complete base nutrient. Normal feeding range is up to 18 mL/gal, depending on growth stage. Consult the FloraPro Liquid Feed Program for complete recommendations.

Recommended Bloom B rates from the FloraPro Liquid Feed Program:

  • Early Flower, Weeks 1–3: 14 mL/gal Bloom B
  • Mid Flower, Weeks 4–6: 13 mL/gal Bloom B
  • Late Flower, Weeks 7–8: 8 mL/gal Bloom B
  • Finish, Week 9: 4 mL/gal Bloom B


Use at the corresponding Bloom A rate:

  • Early Flower, Weeks 1–3: 14 mL/gal Bloom A
  • Mid Flower, Weeks 4–6: 13 mL/gal Bloom A
  • Late Flower, Weeks 7–8: 8 mL/gal Bloom A
  • Finish, Week 9: 4 mL/gal Bloom A


Adjustments may be needed based on environmental conditions, water quality, individual grow structure, and use of additional products. Feed programs are recommendations and a starting point; actual results may vary.

Bloom B completes the FloraPro two-part flowering base system. Used with Bloom A, it helps commercial growers maintain flowering nutrition while the feed program shifts toward generative support and finish. The paired Bloom A/B system gives facilities a repeatable way to support flower development, calcium delivery, nitrogen tapering, and operational consistency.

Product guide

How to use this product

Review usage guidance, compatibility notes, and grower tips for this product.

Completes the Bloom A/B System

FloraPro Bloom B is designed to be used with FloraPro Bloom A. Together, they form the two-part flowering base nutrient system used from early flower through finish.

Built for Flowering Demand

Bloom B helps deliver core flowering nutrition as part of a high-intensity commercial feed program. Used with Bloom A, it supports flower formation, ripening, and finish.

Works with PK+ in Flower

The Bloom A/B system is designed to work with FloraPro PK+. As Bloom rates taper and PK+ rates increase, the program supports P, K, and S delivery while reducing nitrogen contribution through the finish phase.

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