Grow More® Mendocino Producer's Choice Bloom 01-10-18 — 25 lb

Grow More® Mendocino Producer's Choice Bloom 01-10-18 (25 lb) — Low-N High P+K Bloom Powder for Peak Flowering Performance

Grow More® Mendocino Producer's Choice Bloom 01-10-18 is a precision flowering fertilizer with a low-nitrogen, high-phosphate and high-potassium NPK profile — the classic bloom-stage ratio designed to shift plant energy from vegetative growth to reproductive development. At just 1% nitrogen, 10% phosphate, and 18% potassium, this formula reduces the nitrogen signal that drives leafy growth while maximizing the P+K environment plants need to develop dense, productive flowers and high-quality yields.

Part of the Mendocino Producer's Choice advanced powder series, Bloom 01-10-18 dissolves fully in water with no residue and is formulated for precision growing environments where macronutrient ratios are carefully managed by growth stage. It can be used as a core bloom nutrient or blended with other Producer's Choice formulas to fine-tune NPK ratios as the crop moves through distinct phases of the flowering cycle in indoor and greenhouse growing environments.

Key Features & Benefits

• Low Nitrogen (1%) for Bloom Transition: Minimal nitrogen reduces vegetative drive and signals the plant to direct energy into reproductive development — a key shift that supports flowering initiation.
• 10% Phosphate for Flower Site Development: Available phosphate (P₂O₅) fuels ATP energy production, root function, and the development of reproductive sites during the critical bloom phase.
• 18% Potassium for Quality and Density: High soluble potash (K₂O) supports cell wall strength, enzyme activation, water regulation, and starch accumulation — driving flower density and overall crop quality.
• Clean Bloom-Stage Macronutrient Profile: Precisely calibrated 01-10-18 ratio is designed for the flowering stage of the crop cycle, reducing nitrogen interference while maximizing phosphate and potassium delivery.
• 100% Water-Soluble: Dissolves completely with no insoluble residue, compatible with drip systems, flood-and-drain, foliar spray, and recirculating hydroponic systems.

Who Should Use This

Ideal for indoor cultivators, greenhouse growers, and hydroponic operators managing flowering crops who require a clean, low-nitrogen bloom formula. Works well as a primary bloom nutrient in single-formula programs or as a component in multi-part programs where P and K contributions can be precisely tracked and adjusted by stage within the flowering cycle.

Compatibility

Compatible with all Grow More® Mendocino Producer's Choice formulas; can be blended with Flower and Bloom 06-30-30 or Crystallizer 05-10-40 as the crop progresses through flowering. Use with a dedicated calcium-magnesium and chelated micronutrient formula for a complete bloom program. Compatible with drip, flood-and-drain, NFT, DWC, and foliar systems.

Frequently Asked Questions

When should I switch from a vegetative formula to Bloom 01-10-18?

Transition to a low-nitrogen bloom formula at the onset of the reproductive stage — typically as flower sites begin to develop. The reduction in nitrogen combined with increased P and K signals supports the plant's shift from vegetative extension to flower production.

Can I blend Bloom 01-10-18 with a vegetative formula during the transition?

Yes. During the transitional phase, blending Bloom 01-10-18 with a vegetative or balanced formula allows a gradual NPK shift rather than an abrupt change, reducing plant stress and supporting a smoother transition into full flowering.

Is this formula suitable for recirculating hydroponic systems?

Yes. As a 100% water-soluble powder, Bloom 01-10-18 is safe for recirculating systems. Monitor reservoir EC and pH regularly and refresh the reservoir per your system protocol to prevent salt accumulation.

Does this formula contain calcium or magnesium?

The Bloom 01-10-18 is a macronutrient formula focused on P and K delivery. Supplement with a dedicated calcium-magnesium product throughout the bloom stage — calcium demand remains high during flowering for cell wall development and fruit/flower set.