Mushroom Compost Calculator

Length (cm) x Width (cm) x Depth (cm)
= 1000 Litres OR 1M3
Please Note: Delivery charges apply for Scotland, Wales, Northern England, London and the South West of England. Read More.

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Mushroom Compost

Economical Blended Organic Mushroom Compost

Mushroom compost is an efficient, economical way to condition your soil, improving the quality and nutrient value of the soil it is added to, and promoting improved growth of decorative or food plants.

CPA Horticulture's mushroom compost is composed of composted agricultural straw and rotted manure, resulting in compost that is easy to crumble, spread and work with. Thanks to the compost's chemical and physical composition, it is perfect for improving the texture of heavy clay soils, or adding humus to nutrient deficient soils.

What's more, as our compost is fully steam sterilised before leaving the mushroom farm, it will not introduce any weeds or other pests to your site.

For general soil improvement a 50mm layer should be spread over the area to be treated, then forked or rotavated in. A 75mm layer could be considered with very poor soils.

Mushroom Compost: The Benefits

  • Friable, and easy to spread
  • Increases your soil's physical structure
  • Increases the level of organic material in your soil
  • Suitable for use by landscaping professionals and home gardeners
  • Very economical
  • Steam sterilised
  • Weed free

Product Composition

  • Mid-brown in colour
  • Blended agricultural straw and animal manure
  • pH Level: 6.5 -7
  • Organic Matter: 66%
  • Ammonia: 0.26%
  • Magnesium: 0.4%
  • Nitrate: 0.08%
  • Phosphorus: 0.6%
  • Potassium: 3.1%
  • Total Nitrogen: 2.4%

CPA Horticulture's mushroom compost is available in bulk loose loads and bags, and can be delivered anywhere across the mainland UK. 

For a full technical analysis, please contact CPA Horticulture. 

More Information

Please Note: Mushroom Compost is a natural product, and its colours and textures will vary depending how fresh the compost is. Fresh mushroom compost is lighter in colour with more visible straw which will darken and decompose naturally.

Analysis
pH Level 6.5-7
% Organic Matter 66%
Ammonia - N 126 Mg/l (Fresh) / 0.26%
Magnesium 204 Mg/l (Fresh) / 0.4%
Nitrate - N 41 Mg/l (Fresh) / 0.08%
Phosphorus 1480 Mg/l (Fresh) / 0.6%
Potassium 1480 Mg/l (Fresh) / 3.1%
total Nitrogen (N) 2.4%
Product Code: MC
Availability: In Stock
257 reviews (4.9/5)  257 reviews  |  Write a review
Bill from Herefordshire on 18/05/2018
257 reviews
First time using mushroom compost and buying from CPA Horticulture. Impressed with both. Palletways delivered on time and dropped the compost off exactly where I wanted it. All round very happy.
Mark smith from DRYBROOK on 18/05/2018
257 reviews
Arrived early in morning, would of been easier for everyone if on two pallets, is woodier than we expected but time will tell if the plants like it. For the price we're happy
A Chase from Sevenoaks on 16/05/2018
257 reviews
Pleased with the purchase . Delivered within 10 minutes of the forecast delivery time . Quality looks very good
Tony Ward from Crowborough on 07/05/2018
257 reviews
Excellent product. However 40 bags overloads the single pallet and the pile collapsed as it came off the truck !!
Sue from Dorsey on 05/05/2018
257 reviews
Pleased with the product. The delivery driver was excellent - cheerful and helpful. I will order again
Simon from Giltbrook on 03/05/2018
257 reviews
Great compost at a good price, quick on time delivery. I had a text on the expected delivery day giving a two hour window, the driver then phoned half an hour before arriving. I will definitely be buying from CPA again. Thanks also to Mitchells who delivered it in good order.
Bob from Leeds on 30/04/2018
257 reviews
This mushroom compost is excellent stuff. Clean, weed free and in bags that are easy to handle, it is great applied as a thick mulch. It is largely odour free and keeps beds looking tidy all summer as well as holding moisture and suppressing weeds. I use it everywhere except around plants and shrubs needing acid conditions as they don't like lime.
George from Tring on 28/04/2018
257 reviews
The mushroom compost is excellent. Over the next 12 months, I'll be looking to use more of CPA's products.
kevan Wind from Calne on 27/04/2018
257 reviews
Order came as requested. The driver was pleasant. He phoned an hour before arriving and unloaded quickly and with no mess. Compost was as advertised so what else could they have done?
Kevan Wind from Calne on 27/04/2018
257 reviews
Order came on time. Had a call an hour before to say he was coming. Quickly unloaded with no fuss. Compost looks good and as advertised. What else could they do? Oh and the driver was pleasant too.
Ann from Reigate on 27/04/2018
257 reviews
All went smoothly, ordered mushroom compost for a couple of customers. Delivered as asked although the lorry was bigger than anticipated, it seemed to manage okay. Product good.
Ian from Chesterfield on 26/04/2018
257 reviews
Great product, well wrapped on a pallet, driver rang ahead but I missed his call ( I was in the garden). Have so far spread about 10 bags, nice and easy, just empty a bag into the wheelbarrow and shovel it out onto the beds, easy peasy. Whats not to like.
Terry from Brighton on 26/04/2018
257 reviews
Great product. Use all the time. Delivery always prompt.
Sid from Newcastle on 10/04/2018
257 reviews
Online ordering was hassle free. Unfortunately didn't deliver the day as agreed but did deliver the following day.
Sue from Essex on 10/04/2018
257 reviews
Brilliant service, great product
SHONA MCNAMEE from on 05/04/2018
257 reviews
Lovely compost - looks great and spread very nicely. Hope the worms and plants like it!
Dermot Hall from Worton on 02/04/2018
257 reviews
Excellent product, excellent service.
Adam from Lincoln on 28/03/2018
257 reviews
2nd time ordering. Very good product
Mark from Colchester on 27/03/2018
257 reviews
Brilliant service, lovely company to do business with
Adrian Allen from northants on 27/03/2018
257 reviews
all looks good. Delivery on time and driver very helpful as we live up a single track drive.
Parry from Lee-on-Solent on 24/03/2018
257 reviews
Prompt delivery but in a huge lorry that had to be unloaded manually onto our drive, then moved to our garage. Excellent product.
J Cooper from Saffron Walden on 24/03/2018
257 reviews
Excellent product, delivery driver very helpful, although some bags had split in transit, but this was dealt with efficiently. Recommend no more than 20 bags per pallet or use of smaller bags to minimise this tendency as the product is so heavy. Good stuff though.
d. knight from Chipping Norton on 21/03/2018
257 reviews
Great service and product. Well packed and easily dispersed on ground. Good quality compost
Cerith from St Clears on 21/03/2018
257 reviews
Exellent to deal with Rupert especially helpful when palletway refused to even turn off the main road. Thanks Cerith
Cerith from St Clears on 21/03/2018
257 reviews
Good service Rupert especially helpful when palletway refused to even turn off the mail road- not used the product yet but I’m sure it will be fine
Pat Edwards from Gt Manchester on 15/03/2018
257 reviews
Mushroom compost looks great, looking forward to improved crops and flowers.
Mike Harris from Nottingham on 15/03/2018
257 reviews
2nd time I've used this company. Both times were excellent, prompt and on time delivery. Well packaged and exactly as required. Highly recommended.
jwhiteley from LEEDS on 13/03/2018
257 reviews
Used Mushroom manure. Was excellent in quality well rotted without too much straw. Used to improve my lawn soil over two winters and was very effective. Delivery was prompt and the driver v helpful.
jwhiteley1@tiscali.co.uk from LEEDS on 12/03/2018
257 reviews
The service was very good and I spread the manure over my lawn to increase the organic matter after years of weed and feed, the results have been excellent. The driver was v helpful as I have a steep drive he used his pallet trolley to move bags to side of house.
The Talented Gardener from Brighton on 10/03/2018
257 reviews
Good quality and good value product. Definitely improves soil condition and promotes plant growth. Delivery prompt and efficient - regular orders placed are of consistent good quality.
Ian Warren from Chichester on 07/03/2018
257 reviews
Excellent service with a real attention to detail and customer care. Good quality mushroom compost which was delivered on time and placed where required.
Richard from York on 05/03/2018
257 reviews
Arrived on time and seems good quality.
Richard from York on 05/03/2018
257 reviews
Arrived on time and it looks ok.
Chris from Chippenham on 05/03/2018
257 reviews
Compost arrived when advertised - despite the snow. Haven't grown anything yet but so far so good.
Sexton from Colchester on 26/02/2018
257 reviews
Excellent delivery service and very good product; very satisfied
Mrs B Gregory from Stow on the Wold on 26/02/2018
257 reviews
This was my first order of mushroom compost , delivered efficiently to my garden gate. The product is excellent and arrived in easy to handle, strong plastic bags of 75 L each - two pallets at 20 bags. This quantity is sufficient to cover all beds in my small garden - approx. square meters. My only -slight- criticism is that despite my efforts to explain we are situated down a narrow lane with restricted turning area the consignment arrived on a very large truck which was far to big to get to our property (12 tonnes I believe). Which meant the delivery had to be returned and transferred to a smaller van and so arrived a day later than promised.
White from Chester on 25/02/2018
257 reviews
This is the second year that I have used this product and will use again next season. All in all a very good experience from ordering to delivery.
Jonathan Furber from Bristol on 24/02/2018
257 reviews
Smells like powerful stuff but looks great and spreads easily. Service and delivery outstanding and very good value compared with other products.
graham from nr leicester on 23/02/2018
257 reviews
deliverd on the day I asked for driver rang 1 hour before to confirm looks like good compost have yet to use it bit it smells n looks good
Kate Layton from Hampstead Norreys on 23/02/2018
257 reviews
Great service. Everything went as predicted. Freindly helpful delivery driver. Have spread a lot of the mushroom compost and it looks good.
Alastair Sampson from Derby on 20/02/2018
257 reviews
Really pleased with the product. Bought to improve impoverished soil and as a weed suppressant. Friendly efficient service. The delivery driver was helpful also.
Ferguson from Kidlington on 12/02/2018
257 reviews
Delivery right on the time given. Everything was very easy with no problems.
John Dance from Woking on 12/02/2018
257 reviews
My order for mushroom compost was dealt with helpfully and efficiently and I am confident that when I recover sufficiently from humping the bags to open them I shall find the contents just what I wanted.
Mark from King's Lynn on 11/02/2018
257 reviews
Easy to order and delivered when promised. Good communication via tracking and driver called prior to delivery. Compost was packed in clean sealed sacks. We have started to use the compost and it is well rotted and should make a vast improvement to our very sandy and poor garden soil. Very pleased.
Alison from Bere Alston on 10/02/2018
257 reviews
All delivered as promised - very smooth no problems
Andrew Campbell from Cottingham on 07/02/2018
257 reviews
Good value soil enrichment/top dressing/mulch. Thanks. Will buy again.
Justin from Bromyard on 06/02/2018
257 reviews
Well packed and efficient delivery. Compost looks good.
Debra from Birmingham on 03/02/2018
257 reviews
Really good quality mushroom compost. Vey quick delivery.
Mark from Essex on 02/02/2018
257 reviews
I have used CPA for a few years now, mushroom compost always in an excellent friable condition and CPA themselves have been brilliant at helping with the odd unusual request. Thank you for your help
Keith from Hampton on 31/01/2018
257 reviews
Excellent quick service.................................................
PHILL HOWES from HOUGHTON CONQUEST BEDS on 27/01/2018
257 reviews
I decided to adopt a no dig policy for my garden and have found the mushroom compost a first class product good consistency and was impressed with the professionalism of your company .Communications and delivery were excellent. Thankyou
Chris from Waterlooville,Hampshire on 26/01/2018
257 reviews
This is our fifth load. Seems a good product. Delivered on the day of our choosing. Very straightforward ordering process.
Tim Thorogood from Swansea on 24/01/2018
257 reviews
Excellent product, delivered well.
C Ponsonby from Lechlade on 24/01/2018
257 reviews
Excellent service - easy to order online, delivered when it said it would be and very good compost.
Bill from Bristol on 23/01/2018
257 reviews
Excellent service, from delivery advice over the phone to actual delivery.
Bill from Bristol on 23/01/2018
257 reviews
Excellent service, from delivery advice to actual delivery.
Sue from Coalville on 23/01/2018
257 reviews
Helpful driver. Compost well packed and weather proof. Excellent for raised beds.
Emm from Hitchin on 22/01/2018
257 reviews
Delivery came exactly in the window specified would definitely use again
R.Hester from Chiddingfold, Surrey on 21/01/2018
257 reviews
Not used the product yet, but it arrived on time and as described.
Steen from Worcester on 20/01/2018
257 reviews
Very good compost for the garden and the delivery was on time. This is the 2nd lot we have bought this winter. Will be buying next time too.
James Elder from Sheffield on 16/01/2018
257 reviews
Efficient delivery and product looks good. Too early to say how well it will improve the soil.
Henry from Petersfield on 08/01/2018
257 reviews
A very quick, efficient and economical service!
Helen Payne from Rendham on 31/12/2017
257 reviews
I think this must be the 4th consecutive year I've covered my garden in this spent mushroom compost. It's brilliant - suppresses weeds and seems to give all herbaceous borders a good feed over winter.
JOHN WOOD from DERBY on 21/12/2017
257 reviews
Arrived on the day given. The compost looks really good but don't know any results yet because it has only just gone on the garden. Will definitely buy some more when required.
alan chamberlain from norwich on 15/12/2017
257 reviews
received the delivery yesterday, had some discussion with the delivery driver as he was going to drop the pallet load by the roadside in the middle of my driveway. He then agreed to the alternative suggestion i made and dropped it off where i wanted it, so that was a happy ending! The ordering and delivery was prompt and efficient and so far I am pleased with the product and am expecting bumper crops from my recently acquired allotment after applying the 40 bags of mushroom compost.
Minty Skylight Gardening from London on 04/12/2017
257 reviews
This is the 4th load of mushroom compost I have ordered from CPA. The product is an excellent soil conditioner and is well rotted down, indicating that it is aged. Just what we need on London clay soil. Customer service was most helpful following a problem with my delivery slot. The driver was friendly and helpful. I would recommend this product and supplier. Many thanks!
Gemd from Aldershot on 25/11/2017
257 reviews
Really good product, using to improve clay soil & working a treat. Well packaged, swift delivery. 2nd time of using.
GemD from Aldershot on 25/11/2017
257 reviews
Really impressed with the product, using to improve clay soil & is working a treat. Well packaged & swift delivery. 2nd time of using.
Peter Harris from Diss on 19/11/2017
257 reviews
This was my third 40 bag order this year and all have been easy to order and delivered on time by pleasant delivery drivers. Product has been consistantly good and is a definite 'Ronseal' product! Only small issue is occasional large pieces of brick/stone in the odd bag but not a big problem in terms of volume.
Y. Harrop from Bristol on 14/11/2017
257 reviews
Thank you very much for speedy delivery! The carrier driver was friendly, too! Great service, and great product! It was so easy to handle as they were bagged. Def use again!
Andy from Wellingborough on 12/11/2017
257 reviews
The mushroom compost is great for conditioning the soil - we’ve turned our heavy clay soil into a much lighter mix after applying over two seasons. We shall continue the treatment this season to put the garden to bed this winter
Don Cook from Newark on 11/11/2017
257 reviews
My second load! An excellent product at the best price I could find. Delivery service was first rate.
Andy from Wellingborough on 11/11/2017
257 reviews
The mushroom compost is great for conditioning the soil - we’ve turned our heavy clay soil into a much lighter mix after applying over two seasons. We shall continue the treatment this season to put the garden to bed this winter
Rowland Savage from Church Warsop on 08/11/2017
257 reviews
Good service. Timely delivery. Excellent product
Rowland Savage from Church Warsop on 08/11/2017
257 reviews
Good service. Speedy delivery and in time. Excellent product
Mike from Alcester on 05/11/2017
257 reviews
Yes, Excellent product, yet to open all the bags., very pleased , courier driver very polite and friendly.
guy from nottingham on 04/11/2017
257 reviews
Excellent product. Very quick and easy delivery with an extremely helpful delivery driver. Easy to move bags and a good price. will be ordering again.
Alan Kay from Rochester on 30/10/2017
257 reviews
Delivered to my drive on a wrapped pallet, first class product lovely stuff. Will be back for more.
David from Manchester on 30/10/2017
257 reviews
The mushroom compost (3tonne pallet) was excellent value and easy to transport the bags around my garden where needed and as usual delivered on the day they said they would.
Andrea from Stockton on Tees on 30/10/2017
257 reviews
Deliveyr arrived as specified. The driver was excellent at getting the pallet onto an awkward drive and into a convenient place for unloading. The quality of the mushroom compost looks great and individual bags made spreading very easy. My first year purchasing and will definitely be buying other products and mushroom compost each year now. Time will tell if it improves my clay soil but my borders look neat and tidy for the winter.
Frank from Broadstairs on 24/10/2017
257 reviews
Most efficient handling of my order, tracked all the way and delivered on time. Helpful placement of pallet where needed on the driveway. Quality of compost good, well rotted and securely packaged in clean bags for easy carrying. The large consignment is a really economic buy, with some extra to give to friends or curry favour with neighbours. Recommend. Frank. Sent from my iPad
Adam jones from Lincoln on 24/10/2017
257 reviews
Great product at a very reasonable price. Exceptional service. Thank you
devon orchard from exeter on 23/10/2017
257 reviews
great product, delivered on time & very helpful driver, will definitely order more
John from Forest of Dean on 22/10/2017
257 reviews
Excellent quality compost, well bagged and palletized. Delivey excellent and on time. would definately buy again.
Ian McAnally from DUNFERMLINE on 19/10/2017
257 reviews
First delivery arrived as scheduled. Lovely stuff and I’m ordering another pallet of mushroom compost.
David Knutton from Wateringbury on 17/10/2017
257 reviews
very quick delivery and good quality compost. Will use again
Sarah from Aldeburgh on 16/10/2017
257 reviews
Everything arrived as stated and looking forward to seeing the impact of your mushroom compost on my perennials next year!
L Mead from Sevenoaks on 13/10/2017
257 reviews
Good website. Excellent follow up and delivery. Goods as described and in good condition.
LMead from Sevenoaks on 13/10/2017
257 reviews
Easy to use website. Good follow up and checking. Goods arrived on time. Delivery company was excellent too.
Raymond Starr from North Stainley Ripon on 13/10/2017
257 reviews
Wow what can I say about this product it came on Thursday morning has promised it took no time too get it off the wagon on to my drive Thursday after noon put on ten bags on to my Rose beds and it excellent the smell is awesome you can tell it's going too do your soil a world of good Friday morning did the same onto my cottage garden and it's transformed my beds still got loads left for next spring time I will be using this company again next autumn
A Ashton from Calne on 11/10/2017
257 reviews
Very good, pleasant to use compost. It was delivered promptly An easy process all around.
Trudy from Stretton on 11/10/2017
257 reviews
I have only opened one bag to see the quality and it looks and feels very good. Will only put it on the garden once the leaves have finished falling. Will know next year if it has had a positive effect on the soil which is very clayey. The delivery chap was excellent and did his best to drop the pallet off as deep into the garden that his vehicle would allow.
Frank from Broadstairs on 06/10/2017
257 reviews
Most efficient handling of my order, tracked all the way and delivered on time. Helpful placement of pallet where needed on the driveway. Quality of compost good, well rotted and securely packaged in clean bags for easy carrying. The large consignment is a really economic buy, with some extra to give to friends or curry favour with neighbours. Recommend. Frank.
Rudi from Chedgrave on 03/10/2017
257 reviews
Good compost on time, very helpful driver, you never let us down yet
Jon Wilson from Bramham on 26/09/2017
257 reviews
CPA do what it says on the tin. Arrived on the date advised and received phone call 10 minutes before delivery as requested. Unable to comment on results, but looks and feels good. My kind of service. Many thanks for an excellent service.
Denise from Totnes on 26/09/2017
257 reviews
Mushroom compost was good value for money as I need a good mulch for the winter. Order arrived promtly, dispite narrow lanes the driver negociated to my door. Ordered bags on a pallet so that I can move compost around my garden. Product looks very good and warms up well in the sun, so should keep plants happy in the winter.
Ruth from Saxmundham on 17/09/2017
257 reviews
Great compost smell lovely easy to use and rotavated in well .will use again ,delivered on time.
Wickins from Saxmundham on 17/09/2017
257 reviews
What lovely stuff smells great easy to use and rotavated in well will use again when needed.delivered on time.
JWR from Peterborough on 15/09/2017
257 reviews
Good and speedy service, good moist compost.
Peter Copp from EXTON on 13/09/2017
257 reviews
As usual ordering and paying was easy, delivery was quick and not in the rain as on the previous 2 times ! This is a first class product, much better than anything you can buy at your local garden centre. I am re planting several areas of the garden over the next year and this product is an excellent border conditioning starter.

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