Fine plug growing medium

PRO-MIX® FPO is a fine grade, peat/coir-based growing medium with fine perlite that is ideal for the germination of herbs and vegetable seeds. Its physical properties provide favorable conditions to optimize seedling development.

*This product will be delivered in a generic bag. 


  • Approved for organic use
  • Easy filling of trays
  • Improved drainage and air exchange for developing roots
  • Dries out faster than peat/vermiculite blends for easier water management
  • Reduced calcitic limestone for better control of pH with high water alkalinity
  • Reduced fertilizer charge for better control and to prevent seedling "stretch" and growth
PRO-MIX FPO 3.8 cu.ft.
PRO-MIX FPO 3.8 cu.ft.
PRO-MIX FPO 3.8 cu.ft.

More from the PRO-MIX® FPO family


Recommended Usages

Ornemental Ornamental

Plug and germination

Controlled-environment agriculture Controlled-Environment Agriculture

Organic crops
Vegetable transplants
Young plant propagation


Inert ingredients

  • Sphagnum Peat Moss (60-70%)
  • Coir - Horticultural Grade
  • Perlite-Fine
  • Calcitic limestone
  • Wetting Agent

Physical Properties

Particle Size: 

Air Porosity: 

Water Holding Capacity: 

Bulk Density: 

Code Size * Units per pallet Weight
4038023RG 3.8 cu ft Loose 30 60 - 75 lb
4055023RG 55 cu ft Comp. 2 900 - 1200 lb
4135023RG 135 cu ft Loose 1 2200 - 2700 lb



Logo Veriflora

Veriflora Responsibly Managed Peatlands

Premier Tech’s peat moss comes from bogs that are certified under the Veriflora Program. This certification ensures the application of good management principles in all aspects of sustainable development. The criteria include environmental assessment, social engagement, and product quality.

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Permitted Substances Lists

Organic Production Systems Permitted Substances Lists 

This growing media contains only substances that appear on the Organic Production Systems Permitted Substances Lists and may be suitable for use in organic agriculture. Please consult your authorized organic certification body for further information.

Premier Tech, the Company Behind the Brand

Experts at your Service

Our dedicated team of experts is committed to ensuring that professional growers maximize the potential of PRO-MIX® products. We offer comprehensive support to help you enhance your expertise and achieve optimal results in your cultivation endeavors.

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Premier Tech Growers and Consumers Unmatched consistency
Premier Tech Growers and Consumers Superior quality

Superior Quality

We meticulously choose each element of our products, from the carriers to the biological active ingredients, and all other components in between. Our rigorous quality control spans from the bio fermenters to the final formulated products, ensuring every aspect meets our high standards. This meticulous attention to detail offers you peace of mind, knowing you're receiving only the finest quality products.

Unmatched Consistency

Our beneficial microorganisms are seamlessly integrated into our growing media. We meticulously verify the viability and efficacy of each batch produced, guaranteeing that your chosen product maintains its quality and delivers consistent results every time.

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Expert service

Frequently Asked Questions

We do not recommend reusing any growing medium. There are many good reasons not to reuse, including changes to chemical and physical properties over time, diminished effect of wetting agent after use and/or transmission of root diseases to newly planted crops.

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