Mushroom Compost

Mushroom Compost

Not only is our mushroom compost an exceptional soil conditioner, it is very economic to use on a large scale.


Enquires & Orders

For prices and delivery contact us Monday to Saturday from 9am to 6pm.

01302 725544

Email Mr Muck

We offer a reliable, professional service for domestic & trade customers, delivery to all regions within 5 working days.

(3 customer reviews)

Bring life back into tired soils with Mr Muck’s mushroom compost

Mr Mucks Mushroom Compost is a mix of chicken and horse manure with wheat straw. Not only is our mushroom compost an exceptional soil conditioner, it is very economical to use on a large scale.

Mr Mucks Mushroom Compost is a mix of chicken and horse manure with wheat straw. Not only is our mushroom compost an exceptional soil conditioner, it is very economical to use on a large scale. It will improve the structure of heavy clay soils, add humus to thin sandy or chalky soils, enrich all soils and supply nutrients for the healthy growth of plants.

Mr Mucks Mushroom Compost will also increase the water-holding capacity of the soil, which decreases your watering needs.

What is mushroom compost?

Mushroom compost is a type of slow-release, organic plant fertiliser. It is a viable and useful by-product of mushroom farming. The compost is made by using organic materials such as hay, straw, corn cobs and hulls, and poultry or horse manure. These products are formed into a rich organic media.

The mushroom growing process varies slightly between individual growers, this leads to mushroom compost recipes differing to suit the needs of each grower. For instance, additional materials like gypsum, peat moss, lime, soybean meal, and various other organic items may be added to the compost as well. These products are formed into a rich organic compost that serves as the nutrient source for mushrooms.

How is mushroom compost made?

To start with the mushroom compost is sterilised and inoculated with mushroom spawn. Once the mushroom spawn is mixed into the compost, it is steam pasteurised to kill weed seeds and any other unsafe agents. Mushroom composting takes about three to four weeks to process, during which it is monitored closely to maintain adequate temperatures for optimum production. After the process is complete, the leftover compost is disposed of and sold as fertiliser, up to 2 crops of mushrooms are taken from the compost before being released to the landscape market.

Why use mushroom compost?

Mushroom compost is excellent for soil modification as it can radically enhance plant growth, even in the deprived type of soils. This is due to the fact that most of the amended compost serves effectively to improve the clay soil structure, increase soil fertility and lessen the chances of surface crusting as well as compaction. It can also help to improve drainage and ensure that the most natural nutrients are provided to plants which automatically minimizes the need to use fertiliser. Overall, this form of compost is highly beneficial to the soil quality.

How to use mushroom compost?

As a fertiliser and soil amendment, mushroom compost supports plant growth in a variety of applications such as herbaceous beds, shrubs, vegetables and landscaping.

  • Mulching – use 5-6 inches (13-16 cm) of Mr Mucks Mushroom Compost as a mushroom mulch around shrubs and herbaceous perennials to feed plants, suppress weed growth reduce the loss of nutrients from the soil and minimise the work of weeding borders. Through the summer the mulch will retain moisture and protect the soil from drying from sun and wind movement.
  • Soil conditioning – bring dead soil back to life, use Mr Mucks Mushroom Compost in heavy clay soils to improve the condition or use in light sandy soils to give body and retain moisture. Use 5-6 inches (13-16 cm) forked well into the soil to improve the condition of the soil, reducing heaviness and adding nutrients.

Trade Enquiries

We offer professional and cost-effective services for tradespeople or associations requiring larger quantities of Mr Muck’s products, some of our existing clients include:

  • Landscape gardeners
  • Allotment associations
  • Property developers
  • Hotels
  • Schools
  • Golf courses
  • Local councils

We offer delivery throughout the UK to your specified address.


We are flexible and happy to supply the exact quantity of organic manure, mushroom or ericaceous compost and bark mulch that you require. All our products are supplied in airtight sealed bags.


Our trade loads start from 200 sacks or more.

Larger loads of 500 bags or more will be supplied on pallets. Access for a 20-tonne flatbed lorry will ensure we can deliver as near as possible to your drop point, a forklift truck is required to unload and must be available on our arrival. Delivery is generally within 5 working days.


Office hour are Monday to Saturday from 9am to 6pm, for sales and general enquiries please call or email:

Office: 01302 725 544

3 reviews for Mushroom Compost

  1. Lorna Weir

    I have been having organic manure from Mr Muck for years and Tom who delivers it is so helpful and pleasant, he wheels it all down steps and the quality of the manure is always excellent. I can thoroughly recommend this product.

  2. Robert beer

    Must be the best; never fails to restore our 1/2 acre formal garden and our vegetable garden; been doing this a few years now and there is none better that we know of. Sweet smelling as well so well rotted ideal for no dig regimes which we’ve just been converted to. Many thanks

  3. Mary Cooper Brown

    This is the second year I have ordered this mushroom compost and it is brilliant. I love the fact that it comes in individual bags so it doesn’t matter if you don’t need to use it all at once and it’s easy to manoevre round my acre of garden. Great service. Thanks

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Enquiries & Orders

Call us on 01302 725544 Monday to Friday from 9 am to 5 pm and Saturday 10 am to 3 pm.

Family Business

Established in 1996.

Expert Advice

Just a phone call away.

Clean & Odour Free

Supplied in air-tight sealed bags.

Nationwide delivery, we offer a fast and reliable
delivery service direct to your garden or allotment.

National Delivery

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