Base Nutrient

FloraPro™ Bloom A

FloraPro™ Bloom A is used with FloraPro™ Bloom B to form the flowering base of the FloraPro Liquid Program. Designed for flower and finish, Bloom A helps deliver core flowering nutrition and calcium support as part of a two-part system built for high-intensity commercial production. Together, Bloom A and Bloom B support calcium delivery, nitrogen tapering, flower development, and a controlled finish.

FloraPro Bloom A (3-0-1) is the A-side component of the FloraPro two-part flowering base system. When used with Bloom B, it helps deliver the nutritional foundation needed for flowering and finish. The Bloom A/B system uses multiple calcium sources, including a nitrogen-free source, to help sustain calcium delivery later into flower while the program shifts toward a lower-nitrogen finish.

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

  • 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

Use at the corresponding Bloom B rate:

  • 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


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.

Flowering nutrition needs to support generative development without carrying unnecessary nitrogen through the finish. Bloom A helps form the two-part flowering base system that sustains calcium delivery while allowing Bloom rates to taper as PK+ increases. This gives commercial growers a structured way to support flowering, ripening, and finish quality through a repeatable liquid feed program.

Product guide

How to use this product

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

Part of the Two-Part Bloom Base

FloraPro Bloom A is designed to be used with FloraPro Bloom B as the flowering base nutrient system in the FloraPro Liquid Program. Together, they deliver core flowering nutrition from early flower through finish.

Calcium Support Through Flower

Bloom A contributes to the FloraPro Liquid Program’s calcium-fortified flowering strategy, helping sustain calcium delivery as the crop moves deeper into flower and finish.

Supports the Nitrogen-Tapering Strategy

As Bloom A/B rates decrease and PK+ rates increase, the FloraPro Liquid Program shifts nutrition toward flower formation, bulking, ripening, and finish quality while reducing nitrogen delivery.

Support

Frequently Asked Questions

What is the guaranteed N-P-K analysis of FloraPro™ Bloom A and what are its core objectives?

FloraPro Bloom A is formulated with an N-P-K of 3-0-1. It serves as the primary Calcium and micronutrient base for high-intensity flowering environments. Its core objectives are to sustain essential Calcium delivery deep into the flowering cycle, protect cell wall structural integrity, and provide the chemical baseline for natural flower swelling

How does FloraPro Bloom A deliver Calcium late in flower without over-applying Nitrogen?

Standard fertilizer programs rely on Calcium Nitrate as their primary Calcium source, which "tows" unwanted Nitrogen into your reservoir late in flower, disrupting crop steering. FloraPro Bloom A is fortified with multiple Calcium sources—including a completely Nitrogen-free source. This allows growers to deliver robust Calcium levels (42.30 ppm Calcium alongside a lean 31.70 ppm Nitrogen at standard rates) to keep cell walls strong without over-stimulating leafy vegetative growth.

What is the graduated week-by-week flowering feed schedule for FloraPro Bloom A?

Under the continuous liquid feed program, Bloom A rates taper by flower phase to guide reproductive development:

  • 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 A enable "Nitrogen Steering" instead of using a chloride-based finisher?

A chloride-based "finisher" relies on pushing heavy chloride salts to shock the plant and force a color change, which often causes cell necrosis ("chemical sunburn") and mutes terpene expression. FloraPro Bloom A utilizes a precision Nitrogen-tapering signal. By gradually restricting Nitrogen rather than abruptly cutting it off, Bloom A triggers natural leaf senescence, color change, and ripening, allowing the plant's variety-specific terpene profile to shine.

Why is maintaining a high Calcium-to-Nitrogen (Ca:N) ratio in Bloom A critical for final flower quality?

A superior Calcium-to-Nitrogen ratio (achieved at a staggering 1.33:1 ratio in the FloraPro Bloom base) ensures that plant cells remain physically rigid and structurally sound. This prevents late-season flower bud collapse, improves post-harvest drying characteristics, and supports heavy trichome and resin-head development where weaker base chemistries fall flat.

What are the stock tank mixing guidelines and concentration limits for FloraPro Bloom A?

Bloom A concentrates must be kept in Tank A only and never mixed with Bloom B concentrates. When mixing a stock concentrate:

  • Reverse Osmosis (RO) water is highly preferred to ensure maximum purity.
  • Utilizing warm water speeds up dissolution.
  • Never exceed the maximum solubility limit of the fertilizer to prevent minerals from salting out of solution
How does FloraPro Bloom A help growers avoid the late-season "Chloride chokehold"?

High levels of chloride anions compete directly with Nitrate (NO3​) and Phosphorus (H2​PO4​) for uptake at the roots. This competitive ion uptake effectively "starves" the metabolic pathways required to build complex aromatic rings. Bloom A avoids late-stage Calcium Chloride overload, keeping the plant's vascular pathways open so secondary metabolites and terpenes can synthesize at maximum genetic potential.

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