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Pro-Mix MP Mycorrhizae Organik Compact - 3.8 Cu FT

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In-Store Pickup Only

Description

Pro-Mix MP Mycorrhizae Organik Compact is a multi-purpose growing medium approved for organic use, made to deliver well-balanced air and water conditions for reliable container production. This organic growing medium is built for growers who want a consistent, professional substrate that supports strong root performance across a range of crops.

Designed around balanced physical properties, it offers a medium air porosity profile with medium-high water holding capacity, supporting steady moisture while keeping the root zone breathable. A low bulk density feel keeps the mix light and workable for everyday planting and pot filling. The overall structure is aimed at dependable drainage and a stable air-to-water balance, which helps plants settle in quickly and maintain even growth.

The blend is built from sphagnum peat moss with coir and perlite for structure, plus calcitic limestone and a wetting agent to support consistency in the media. For a compact facts layer, the active component is AGTIV reach mycorrhizae, and the mix also includes a starter fertilizer charge derived from organic composted, heat processed poultry manure and a seaweed based fertilizer that supplies both macro and micronutrients.

AGTIV reach technology is included to develop the root system. It expands root system capacity, supports plant root systems, and enhances nutrient and water uptake for stronger day-to-day growth. With a root-first focus, the medium is positioned to produce more vigorous and healthy plants, especially when uniform establishment and consistent uptake are key priorities.

Pro-Mix MP Mycorrhizae Organik Compact is suited to a variety of growing applications, including greenhouse vegetables, vegetable transplants, and organic crops. It is also ideal for herbs and vegetables, where balanced air and water properties help support steady development from early establishment through ongoing production.

This is a good fit for growers who want an organic-approved, multi-purpose growing medium in a compact format, with AGTIV reach mycorrhizae, medium air porosity, and medium-high water holding capacity to support consistent root development and reliable nutrient and water uptake.

Derived From
Canadian Sphagnum Peat Moss
Coconut Coir
Perlite
Calcitic Limestone
Wetting Agent
Mycorrhizae - PTB297

Frequently Asked Questions
What does calcitic limestone do for plants?

Calcitic limestone raises overly acidic soil toward a healthier pH range while adding slow, steady calcium for stronger roots and sturdier new growth. It’s important because pH controls nutrient uptake, and it’s unique because it buffers the root zone gradually instead of acting like a fast, temporary calcium boost.

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Why do growers use Canadian sphagnum peat moss in potting mixes?

Canadian sphagnum peat moss is important because it holds moisture evenly while still supporting air spaces that roots need for oxygen, which makes watering and nutrient uptake more consistent. It is unique because it naturally trends acidic and acts more like a moisture-and-structure foundation than a nutrient source, so it changes root-zone balance in ways other base ingredients do not.

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Why is coconut coir important for plant growth?

Coconut coir is important because it holds water while still keeping roots oxygenated, creating a more stable root zone that supports faster, healthier growth, and it’s unique compared to similar media because it combines soil-like moisture buffering with more controllable, predictable nutrient and drainage behavior.

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Why is perlite important for plant growth, and what makes it different from other mix ingredients?

Perlite is important because it increases root-zone oxygen and improves drainage, helping roots stay healthy and active; it’s unique because its main benefit is physical structure and airflow—not nutrients or moisture storage—so it fixes “too wet and compact” root problems in a simple, predictable way.

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What do mycorrhizae actually do for plant roots?

Mycorrhizae form a living partnership with roots that expands the plant’s effective root reach, helping it gather water and hard-to-reach nutrients more efficiently. They’re important because they improve steadiness and stress tolerance over time, and they’re unique because they physically connect to roots and build a fungal network in the root zone rather than acting like a direct nutrient input.

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What does a wetting agent do for plants?

A wetting agent helps water spread and soak evenly through the root zone instead of beading up, running off, or channeling through one path, which makes hydration and nutrient flow more consistent. It’s important because it improves the water delivery system rather than feeding the plant directly, making it uniquely useful when the real problem is uneven wetting and dry pockets that can mimic deficiencies.

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