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Mushroom
Substrates

Get Your Mix
Casing, compost, custom – we’re ready
Peat Mix for Fungi of All Kinds

Peat is commonly used as a casing layer, but it can also be blended to match specific growing environments. We’ll formulate a substrate that supports consistent yields and reliable performance.

  • Standard casing layer – peat ensures ideal moisture and air balance.
  • Compost-grown varieties – improves fruiting and yield uniformity.
  • Specialty cultivation – controls humidity and airflow in mixed systems.
  • Custom blends – mixed to your growing process or equipment.
Mushrooms rely entirely
on their growing substrate

Mushrooms don’t photosynthesize. Their entire growth depends
on the substrate: it supplies nutrients, moisture, structure, and
pH balance. We formulate peat-based substrates for commercial
growers, including casing layers and custom blends because for
mushrooms the right mix is critical.

Blended for Your Growing System
Each method needs a different mix – adjusted for trays, tunnels, or vertical growing.
Consistent Moisture Supply
Peat holds water evenly – keeps surface humidity stable for uniform flushes and fewer defects.
pH That Supports Mycelium
Slightly alkaline mix – helps mushrooms form and reduces contamination risk.
Right Open Structure, No Compaction
Loose texture – air reaches mycelium, improves pinning and crop speed.
Available sizes
70 L 250 L Big Bale
Logistics
Not sure what to choose? Start with these questions
Even the best substrate won’t guarantee success if the conditions aren’t right. What matters is having the right mix for your setup. Consider the ‘what’ and ‘where’, that will help us determine the best formula for your substrate.
We are agronomists, and we know everything-peat.

Peatman-selected substrates are mixed with precision, balancing water retention, aeration, and stability to meet the needs of your seedlings at every stage. We are agronomists, and we know everything-peat.

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