PRO-MIX BK45-V
BK55* – Medium water retention
PRO-MIX BK45-V is a medium-weight, medium-coarse textured growing medium designed for cultivation of a wide variety of greenhouse and perennial crops in medium and large containers. The combination of coarse textured, processed southern pine bark, sphagnum peat moss and vermiculite provides a porous, general purpose growing medium.
*Exclusive to Eastern United States.
Crops
- Potted flowering plants
- Hydroponic
- Perennials
Benefits
- Less frequent irrigations required compared to other bark mixes
- Added vermiculite holds nutrients for increase cation exchange capacity and better use of fertilizer
- Processed southern pine bark adds weight for increased container stability
- Can be used for indoor or outdoor growing applications
- Multi-use for a wide range of greenhouse plants, perennials and potting applications
Active Ingredients
MYCORRHIZAE
- Improves fertilizer uptake; reduces fertilizer costs
- Increases the resistance of plant to stresses; reduces maintenance costs
- Optimizes results without changing growing practices
- Increased root mass, flower production, plant size, yield
- Improved water uptake and increased drought resistance

Advice from our specialist
PRO-MIX BK45-V is a medium-weight, medium-coarse textured growing medium designed for cultivation of a wide variety of greenhouse and perennial crops in medium and large containers. The combination of coarse textured, processed southern pine bark, sphagnum peat moss and vermiculite provides a porous, general purpose growing medium.
Our PRO-MIX peat-bark based blends contain various amounts of partially composted and aged southern pine bark to provide low water retention, high drainage, good air porosity and added bulk density for container stability.
Training center
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PRO-MIX Growing Media Components Explained: Vermiculite
Horticulture Specialist Troy Buechel talks about one of PRO-MIX growing media components which is the vermiculite.
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PRO-MIX Growing Media Components Explained: Processed Bark
Horticulture Specialist Troy Buechel talks about one of PRO-MIX growing media components which is the processed bark.
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Horticulture specialist Ed Bloodnick presents PRO-MIX® CC40, a new generation of coir growing media. The unique structure of the coir found in CC40 provides an optimized growing environment for plants such as long term crops especially under drought conditions.
Ingredients
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SPHAGNUM PEAT MOSS
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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.
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PROCESSED SOUTHERN PINE BARK 3/4" SCREENED
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PRO-MIX BK45-V is formulated with processed, aged yellow pine bark from the forests of the mid-Atlantic region of the US. This pine bark is screened, partially composted and aged to produce a coarse base ingredient for blending PRO-MIX growing media to add bulk density, drainage and air-porosity.
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VERMICULITE
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Vermiculite is an expanded aluminum-iron, magnesium silicate mineral ore that is mined throughout the world. Vermiculite has a high total-porosity and has good nutrient-holding ability.
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LIMESTONE
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Used to adjust pH to optimum range. Also a source of Calcium and Magnesium.
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WETTING AGENT
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A wetting agent is a substance that reduces the surface tension of water, allowing water to penetrate and uniformly wet growing media.
Documents and specifications
Code | Size (Regional availability may vary) | Units per pallet | Weight |
---|---|---|---|
5028045RGVE | 2.8 cu ft Loose | 42 | 50 - 60 lb |
5060045RGVE | 60 cu ft Loose | 2 | 1100 - 1300 lb |
Also available in bulk |
5028045RGVE | |
---|---|
Size (Regional availability may vary) | 2.8 cu ft Loose |
Units per pallet | 42 |
Weight | 50 - 60 lb |
5060045RGVE | |
---|---|
Size (Regional availability may vary) | 60 cu ft Loose |
Units per pallet | 2 |
Weight | 1100 - 1300 lb |
Size (Regional availability may vary) | Also available in bulk |
Units per pallet | |
Weight |