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FloraPro™ Bloom B
FloraPro™ Bloom B
FloraPro™ Bloom B
FloraPro™ Bloom B
FloraPro™ Bloom B

Base Nutrient

FloraPro™ 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.

Support

Frequently Asked Questions

What are the N-P-K analyses for FloraPro Grow A and Grow B?

FloraPro Grow A has a guaranteed analysis of 4-0-1, and FloraPro Grow B has an analysis of 1-2-4.

Do I need to add a separate Cal-Mag supplement when running FloraPro Grow A & B?

No. Calcium is fortified directly into the base nutrient architecture, creating a high Calcium-to-Nitrogen (Ca:N) ratio from day one. This strategic formulation eliminates the need for any separate Cal-Mag or Calcium supplements, which also frees up a dosing channel on your injection panel.

How does switching to the liquid Bloom B program save commercial facilities labor in the wet room?

Dry powder programs require team members to constantly scoop, weigh, blend, and validate concentrates, which bleeds profit through labor hours and introduces human error. FloraPro Bloom B is a highly concentrated, ready-to-use liquid. It slashes mixing time by up to 70%, allowing you to reallocate your commercial grow team away from the mixing tank and back onto high-value canopy care (like pruning, crop steering, and scouting).

What are the reservoir management best practices when running FloraPro Bloom B?

For peak performance and stability, keep your mixed reservoir solution temperature below 75 °F (24 °C) and maintain constant aeration. Perform a complete nutrient solution change every 7 to 10 days, and maintain a highly stable target pH range of 5.5 to 6.5 to ensure all Generative elements remain fully bioavailable.

How does Bloom B's high Potassium (K) delivery support bud swelling and transpiration?

Potassium functions as a key cellular osmolyte, drawing water into plant cells to physically swell flower buds. Additionally, it regulates stomatal opening and closing, which controls gas exchange, transpiration, and overall nutrient transport throughout the vascular system, keeping your canopy active and performing under high-intensity grow lights.

Can I combine Bloom B concentrates with Bloom A concentrates in my stock tanks?

Concentrated Bloom B (rich in Phosphates and Sulfates) must never be mixed with concentrated Bloom A (rich in Calcium). Doing so causes immediate chemical precipitation, locking up your Calcium and Phosphorus into an unusable chalky sediment that will destroy your fertigation injection pumps. They must only meet in a diluted working solution.

What is the week-by-week feed program for FloraPro Bloom B?

Bloom B is applied in equal parts with Bloom A throughout flowering and finish:

  • Early Flower (Weeks 1–3): 14.0 mL per gallon
  • Mid Flower (Weeks 4–6): 13.0 mL per gallon
  • Late Flower (Weeks 7–8): 8.0 mL per gallon
  • Finish (Week 9): 4.0 mL per gallon
How does Bloom B work in tandem with PK+ (0-4-6) to execute a generative shift?

Shifting application rates away from the nitrogen-containing Bloom base and toward PK+ (0-4-6)—a zero-nitrogen Phosphorus, Potassium, and Sulfur supplement—enables precise Nitrogen Steering. Shifting to PK+ as flowering progresses reduces Nitrogen delivery while maintaining the optimal P, K, and S levels required for heavy generative weight and flower bulking.

What N-P-K analysis does FloraPro Bloom B deliver, and what is its primary target?

FloraPro Bloom B is formulated with an N-P-K of 1-5-5. Its primary target is generative reproduction. It focuses the plant's metabolic energy entirely on flower size, floral site proliferation, and the accumulation of essential oil and resin precursors during high-intensity bloom cycles.

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