BRK – Low water retention

Formulated with aged pine bark, PRO-MIX BRK is nitrogen-stabilized and therefore well suited for growers who require more frequent dry down periods and who have to deal with a changing outdoor growing environment. PRO-MIX BRK is a carefully designed low water retention growing medium which will provide quality and consistency for great results.

*This product will be delivered in a generic bag.

Where to find our products

Usage Guidance


  • Annuals
  • Potted flowering plants
  • Perennials
  • Potted trees and shrubs


  • Difficult to overwater crops
  • Increased drainage
  • High bulk density ensures good pot stability
  • Growers can use fertilizer regimes similar to peat-based mixes, unlike other bark-based mixes


  • VeriFlora® is an agricultural sustainability certification and eco-labeling program recognized as the gold-standard in the floriculture and horticulture industries.

Active Ingredients


  • Enhances growth
  • Increases germination rates
  • Creates an optimized environment that promotes growth and reduces the impact of stresses on plants
Susan Parent Horticulture Specialist

Advice from our specialist

PRO-MIX BRK contains a combination of Canadian sphagnum peat moss, specially processed pine bark and perlite to form a growing medium that provides good bulk density, high drainage, low water retention and good air porosity. Many growers prefer this PRO-MIX formulation for garden mums, perennials and small container nursery plants grown outdoors where rainy weather can be a factor. The processed bark is nitrogen-stabilized so that there is a minimal drawdown of nitrogen. This means growers do not have to increase nitrogen rates. 

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Training center


  • SPHAGNUM PEAT MOSS (45-55%) ?

    Canadian Sphagnum peat moss is a natural, organic matter that comes from a peat bog. This primary resource is carefully harvested by vacuum harvesters. Peat moss comes in various fibrosity and levels of decomposition. Once carefully graded, peat moss assures that qualities of each grade are optimized for based on grower and uses for a final product reaching high quality requirements.


    Processed pine bark consists of partially composted aged pine bark derived from predominantly red pine species. The pine bark is screened, graded and aged turned to partially compost to improve and stabilize the carbon:nitrogen ratio.


    Perlite is an alumino-silicate ore of volcanic origin. The raw ore is crushed, graded and screened in various particle sizes. Perlite has a high total-porosity and improves drainage and air porosity.


    Used to adjust pH to optimum range. Also a source of Calcium and Magnesium.


    A wetting agent is a substance that reduces the surface tension of water, allowing water to penetrate and uniformly wet growing media.


    Biostimulant is a strain of bacillus that naturally enhances growth and increases germination rates. It creates an optimized environment that promotes growth and reduces the impact of stresses on plants.

Documents and specifications

Code Size (Regional availability may vary) Units per pallet Weight
50603RG 60 cu ft Loose 2 900 - 1250 lb
Size (Regional availability may vary) 60 cu ft Loose
Units per pallet 2
Weight 900 - 1250 lb

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