PRO-MIX BK25
BK25* – Peat/Bark based growing medium
PRO-MIX BK25 is a medium-weight growing medium designed for the cultivation of greenhouse horticultural crops in 4” pots or larger. The combination of processed southern pine bark, sphagnum peat moss and perlite makes for a general purpose product that provides good drainage and low water retention capacity.
*Exclusive to Eastern United States
Crops
- Potted flowering plants
- Foliage plants
- Plug & Germination
- Perennials
- Nursery
Benefits
- Good drainage, low water retention
- For a wide variety of greenhouse crops
- Higher container stability than peat-based mixes
- Suitable for bedding plant trays to medium size pots

Advice from our specialist
PRO-MIX BK25 contains 25% processed bark, Canadian Sphagnum peat moss and perlite and is ideal for greenhouse crops grown in bedding trays to medium size containers.
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 Active Ingredient: MYCORRHIZAE
Horticulture Specialist Troy Buechel talks about one of the active ingredients contained in our PRO-MIX growing media: MYCORRHIZAE.
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PRO-MIX Growing Media Components Explained
Horticulture Specialist Troy Buechel talks about the ingredients included in our professional line of growing media such as sphagnum peat moss, bark, coir, perlite and vermiculite and their benefits for your crops.
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PRO-MIX Growing Media Components Explained: Sphagnum Peat Moss
Horticulture Specialist Troy Buechel talks about the sphagnum peat moss ingredient used in our PRO-MIX professional growing media and its benefits for your crops.
Ingredients
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SPHAGNUM PEAT MOSS (50-60%)
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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 (25%)
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PRO-MIX BK25, BK55 and NCX are 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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PERLITE
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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.
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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 |
---|---|---|---|
5028025RG | 2.8 cu ft Loose | 48 | 45 - 50 lb |
5060025RG | 60 cu ft Loose | 2 | 900 - 1100 lb |
Also available in bulk |
5028025RG | |
---|---|
Size (Regional availability may vary) | 2.8 cu ft Loose |
Units per pallet | 48 |
Weight | 45 - 50 lb |
5060025RG | |
---|---|
Size (Regional availability may vary) | 60 cu ft Loose |
Units per pallet | 2 |
Weight | 900 - 1100 lb |
Size (Regional availability may vary) | Also available in bulk |
Units per pallet | |
Weight |