Base Nutrient

FloraPro™ Grow B

FloraPro™ Grow B is used with FloraPro™ Grow A to complete the vegetative base of the FloraPro Liquid Program. Built for propagation and vegetative growth, Grow B helps deliver balanced vegetative nutrition and essential elements as part of a calcium-fortified two-part system. Together, Grow A and Grow B support structural development, rootzone balance, and preparation for the transition into flowering.

: FloraPro Grow B (1-2-4) is the B-side component of the FloraPro two-part vegetative base system. When used with Grow A, it helps provide the primary vegetative nutrition and essential micros needed for rapid crop development. This two-part system supports vegetative growth while keeping the feed program simple, consistent, and ready for the generative shift.

Use FloraPro Grow B with FloraPro Grow A as part of a continuous liquid feed program for hydroponic use only. Do not use Grow 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 Grow B rates from the FloraPro Liquid Feed Program:

Propagation, Week 1: 7 mL/gal Grow B
Vegetative, Weeks 1–3: 12 mL/gal Grow B

Use at the corresponding Grow A rate:

Propagation, Week 1: 7 mL/gal Grow A
Vegetative, Weeks 1–3: 12 mL/gal Grow 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.

: Grow B completes the two-part vegetative base system, helping commercial growers deliver consistent nutrition through propagation and veg. When paired with Grow A, it supports balanced rootzone conditions, vegetative structure, and a cleaner operational workflow. The result is a simplified base nutrient strategy designed for commercial consistency and efficient crop steering.

Product guide

How to use this product

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

Completes the Grow A/B System

FloraPro Grow B is designed to be used with FloraPro Grow A. Together, they form the two-part vegetative base nutrient system used during propagation and vegetative growth.

Balanced Vegetative Nutrition

Grow B helps provide essential vegetative nutrition and micros as part of the FloraPro Liquid Program. Used with Grow A, it supports the crop’s structural development and readiness for flowering.

Simplifies Commercial Feeding

The Grow A/B system helps reduce complexity in commercial nutrient programs by delivering vegetative base nutrition through a clear two-part liquid format with stage-based application rates.

Support

Frequently Asked Questions

What is the N-P-K analysis of FloraPro Grow B and how does it balance the vegetative feed?

FloraPro Grow B is formulated with an N-P-K of 1-2-4. While Grow A delivers Calcium, Nitrogen, and essential micros, Grow B completes the vegetative profile by supplying targeted Phosphorus, Potassium, and Magnesium. Paired in equal ratios with Grow A, it establishes the precise N-P-K-Mg balance required for rapid, healthy vegetative cell division

Why does the FloraPro Liquid program utilize a 2-part "A & B" system instead of a single bottle?

Concentrated Calcium (present in Grow A) and concentrated Phosphates/Sulfates (present in Grow B) are chemically incompatible in concentrated forms. If mixed together in a single bottle, they react to form insoluble Calcium Sulfate (gypsum) and Calcium Phosphate. Utilizing a two-bottle (A/B) delivery system keeps these elements separated and stable until they are diluted into your active irrigation water

What are the recommended application rates for FloraPro Grow B, and must they always match Grow A?

Yes, under standard operating SOPs, Grow B is designed to be applied in a strict 1:1 ratio with Grow A to ensure nutritional symmetry. The rates are:

Propagation (Week 1): 7.0 mL per gallon
Vegetative (Weeks 1–3): 12.0 mL per gallon
Normal Range: Up to 18.0 mL per gallon, adjusted based on direct EC tracking and plant feedback

How does FloraPro Grow B support early structural and root zone development?

By providing an elevated Phosphorus and Potassium ratio relative to Nitrogen, Grow B stimulates robust lateral root branching, dense root initiation, and strong vascular stem thickness. This ensures that your young plants do not become overly soft or "leggy" during rapid vegetative growth, preparing them structurally to carry a heavy flower load in bloom

How do you mix FloraPro Grow B in a direct-addition day tank or batch tank?

When batch mixing directly into a day tank:Start with clean water.Add your Grow A first and mix until it is completely dissolved in the water.Add your Grow B second, stirring thoroughly between additions.Mix in any secondary supplements (such as FUL+), then always check and adjust pH (target 5.5 to 6.5) and EC last before irrigating your crop.

Can FloraPro Grow B be used across different growing media like Rockwool and Coco Coir?

Yes. FloraPro Grow B is fully compatible across Rockwool, coco coir, peat, and all other commercial soilless growing media. Because it is formulated with clean, technical-grade inputs and contains no heavy dyes or fillers, it behaves predictably in both run-to-waste and recirculating hydroponic setups

How does Grow B help prevent batch-mixing drift and human error in commercial wet rooms?

Mixing dry powders on-site can lead to batch-to-batch inconsistency based on "who mixed the tank today". FloraPro Grow B is a highly concentrated, ready-to-use liquid designed to provide guaranteed consistency. Whether it is injected via automated panels or batch-mixed, it ensures an identical chemical profile and stable EC/pH in every single fertigation event

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