Mushroom Mulch Compost Bulk Bag (750ltr)

Our mushroom mulch compost is an organic, soil-conditioning mulch designed to improve soil health, retain moisture, and protect planted areas throughout the year. Made from spent mushroom compost generated during the commercial mushroom growing process, this material continues to deliver long-term benefits once mushroom cultivation has finished.

Sometimes referred to as mushroom dirt, this composted growing medium originates from a blend of straw, manure, gypsum, and other natural agricultural materials. Although it is no longer active for mushroom production, it remains rich in organic matter and offers slow-release nutrients that support steady plant growth. As a result, mushroom mulch compost is widely used as a surface mulch and general soil improver across gardens, allotments, and landscaping schemes.

When applied as mulch, mushroom compost forms a protective layer over the soil surface, helping to reduce moisture loss during warmer weather and limit weed growth. This makes it particularly effective around shrubs, trees, borders, and established planting where maintaining soil condition is essential. The mulch also helps moderate soil temperature, reducing stress on plant roots during periods of heat or cold.

Mushroom mulch compost can also be incorporated into the soil to improve structure and workability. In heavier soils, it helps reduce compaction and improve drainage and aeration. In lighter, free-draining soils, it increases moisture retention and organic content. This balanced improvement creates healthier growing conditions and encourages stronger root development over time. For areas prone to waterlogging, the compost can be blended with sharp sand or grit to further enhance drainage.

While the focus of this product is its use as mulch, spent mushroom compost remains a highly versatile material. It can be dug into beds and borders during soil preparation, used to refresh tired soils, or applied as a mulch layer to protect and nourish existing planting. Its slow-release nutrient profile supports long-term soil fertility without encouraging excessive, short-term growth.

We offer mushroom mulch for sale in bulk quantities, making it a cost-effective option for larger gardens, landscaping projects, and commercial use. Customers choosing to bulk buy mushroom compost benefit from consistent quality, efficient coverage, and excellent value compared to smaller packaged alternatives.

Key features

• High-quality mushroom mulch compost made from spent mushroom compost.
• Ideal for use as a mulch to retain moisture and suppress weeds.
• Improves soil structure and organic content when worked into existing soil.
• Slow-release nutrients support healthy, sustained plant growth.
• Suitable for beds, borders, shrubs, trees, and general landscaping.
• Bulk bag covers 12m² area at a depth of 50mm.
• Typically neutral to slightly alkaline, suitable for most non-ericaceous plants.
• Can be mixed with sharp sand or grit to improve drainage in heavier soils.
• Cost-effective solution for customers looking to bulk buy mushroom compost.
• Contact us if you require loose load delivery.