BIOMAX™ Mushroom Compost

BIOMAX™ Mushroom Compost

C-I-L® BIOMAX™ Mushroom Compost is a by-product from mushroom farming that improves aeration and water retention in the soil. It is a naturally weed-free, non-burning alternative to compost that helps improve:

  1. Soil structure and texture;
  2. Soil aeration to increase the roots' ability to absorb nutrients and oxygen;
  3. Water retention to decrease the risk of plant dehydration.

Ideal for shrubs, trees, lawns and gardens.

  • Information
  • How to use
  • Safety
  • Specs


12.5 kg


  • Improves soil structure
  • Increases soil aeration
  • Improves soil's water retention
How to use

How to use

Roses, shrubs and trees

  1. Fill 1/3 of the planting hole with this compost.
  2. Place the plant in the hole and fill in areas around the root ball with a mixture of existing soil and this product.

New lawns and lawn patch repair

  1. Prepare seed bed by spreading this product at a rate of 12.5 kg per 6 m2 (65 sq. ft.) and rake into top 10 cm (4 in) of soil.
  2. Sow grass seed and water soil until moistened.

Top dressing established lawns

  1. Rake to remove debris and loosen existing soil.
  2. Apply at the rate of 12.5 kg per 12.5 m2 (135 sq. ft.) (or 1 cm thick), in early spring and again in September.
  3. When overseeding, spread C-I-L® Grass Seed, then water gently but thoroughly.

Top dressing existing flower beds and vegetable gardens

  1. Rake to remove debris and loosen existing soil.
  2. Spread 1-2 cm (0.5-1 in) evenly over lawn.
  3. Rake again to mix soils together.
  4. Water to moisten soil.


  • Wash hands after use.
  • Keep out of the reach of children and pets. 


Store product sealed in original container, in a dry place.


If it becomes unusable, or there is no intention to reuse it, add to compost bin or dispose according to provincial and municipal regulations.*

*Where supported by local recycling programs.



0 58262 80702 8

Safety data sheet




PDF (12.5 kg)

Guaranteed minimum analysis

Total nitrogen (N): 1%
Available phosphoric acid (P2O5): 0.5%
Soluble potash (K2O): 1%
Organic matter: 25%
Maximum moisture:  65%


Manure on which mushrooms were grown, dark peat


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