Overpowering ammonia smell. This is not fit for growing in. It may be made from organic matter but smells like that matter is from dog waste. Nothing is growing in it, it is killing seedlings off and... See more
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I wish that we had read these reviews before using this compost to plant out our sweet pea seedlings. They were thriving until we potted them on using this compost. Within a day they had all wilted,... See more
Bought quite a bit of the manure and compost this year (40 bags). Manure needs digging in, as a mulch it dries too quickly and blows away. Compost is reasonable for organic matter and further digging... See more
Company replied
It does just fine to.top up beds and outdoor pots but it's absolutely stinks! Of all my years home gardening and allotment I've never come across a smellier compost. How does it even get like this????... See more
Company details
Contact info
Meteor House, Finningley,, DN9 3GA, Doncaster, United Kingdom
- 0333 772 6219
- sales@supagrow.co.uk
- www.supagrow.co.uk
1.8
Poor
108 reviews
Replied to 55% of negative reviews
Typically replies within 1 week
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Overpowering ammonia smell
Overpowering ammonia smell. This is not fit for growing in. It may be made from organic matter but smells like that matter is from dog waste. Nothing is growing in it, it is killing seedlings off and attracting flies.
April 22, 2026
Unprompted review
Killed all our seedlings
I wish that we had read these reviews before using this compost to plant out our sweet pea seedlings. They were thriving until we potted them on using this compost. Within a day they had all wilted, we tried to revive them but to no avail. They are all now dead.
April 16, 2026
Unprompted review
I don't even know where to start..avoid…
I don't even know where to start..avoid buying this so called compost at all costs!
I bought few bags from Range to plant my hydrangeas and other plants in my new made flower bed.
First when I was opening the bag I noticed that the compost is very grey/mold colour and it smells really bad of animal faeces but I carried on planting thinking it's normal for organic compost to be like that.
My the time I finished and watered my newly made flower beds the smell was so bad I couldn't sit in the garden for more than 10 minutes! I am not exaggerating!
Next afternoon came back to check on my plants only to find out the soil is full of disgusting yellow dung flies! There are thousands of them right now on my plants and in my flower bed laying eggs and swarming in the soil. I just don't know what to do, to remove my expensive plants that I planted and remove the disgusting compost or to wait and see what happens next. The flies are truly disgusting, I suspect there were eggs or larvae already in the compost.
I honestly don't know how are they allowed to sell something like that it should be illegal as my flower beds are now infested and infected with god knows what and the smell is horrendous.
I am going back to the Range to place a complaint about it and I hope that no-one buys this so called organic compost full of s... t and infestation.
April 9, 2026
Unprompted review
I have never complained about compost…
I have never complained about compost before, I reported 24 tomato seedlings at the weekend in this compost, two varieties of which I have no seeds left. Every plant is dead, The ones in the homegrown compost in a tray are still alive. This compost smells so bad like a combination of horse manure and petrol. It was a grey colour in parts in the bag. This was purchased from the Range.
March 17, 2026
Unprompted review
Fine but STINKS
It does just fine to.top up beds and outdoor pots but it's absolutely stinks! Of all my years home gardening and allotment I've never come across a smellier compost. How does it even get like this????
March 14, 2026
Unprompted review
This compost and topsoil has been great…
This compost and topsoil has been great for topping up my new garden allotment beds. We put in 5 very large beds and managed to get them really full using manure from the local stables and about 30 bags of supagrow to top it all off. On one of the beds I also added 4 bags of topsoil to give the soil more structure. We managed all of this for next to nothing, and it was a great growing season.
Hope you see more bags in stock this year at Wilko!
November 15, 2025
Unprompted review
Reply from SupaGrow
Morning! Thank you for your amazing review! Happy Gardening 🌱
Full of plastic
Bought 15 bags of compost from Wickes for my allotment. Took photo but not sure I can upload it here. Really poor and I am going to look for a refund at least for the unopened bags if not all as im going to have check the product already opened very poor.
September 23, 2025
Unprompted review
Reply from SupaGrow
Good afternoon
We place great importance on feedback regarding our business practices and the quality of our products. Should you wish to continue this discussion, please feel free to contact us at sales@supagrow.co.uk
Best regards,
Supagrow Team 🌱
Just waste not compost
For those who want to complain about this compost, it's no use to email their customer service or sales department. Instead, try the Of&G organic website and look for the PAS certification. There is an email address there for the certification body and maybe they will investigate the issues with this compost.
April 10, 2025
Unprompted review
Reply from SupaGrow
Good morning, Andreea,
I respectfully disagree with your recent comments. I understand that a member of our technical team has already been in touch with you, and a resolution has been reached.
We place great importance on feedback regarding our business practices and the quality of our products. Should you wish to continue this discussion, please feel free to contact us at sales@supagrow.co.uk
Best regards,
Supagrow Team 🌱
Have had SupaGrow compost and topsoil…
Have had SupaGrow compost and topsoil quite a number of times. This year's batch of compost is absolutely dreadful. Smells very like leylandi cuttings and is FULL of plastic, stones, sticks, polystyrene and broken glass. Will not be buying this product again. Will be looking for receipts to see if I can return what hasn't been opened. Put some in the garden with flower seeds and nothing has germinated. Shocking and unacceptable quality supposed to be "organic".
May 17, 2025
Unprompted review
Reply from SupaGrow
Good Morning,
Thank you for taking the time to contact us, and for your continued custom over the years. We are very sorry to hear about your recent experience with the SupaGrow compost and fully understand the frustration and disappointment this has caused.
The condition you’ve described is certainly not in line with the standards we uphold. SupaGrow is intended to be a high-quality, organic product, and we take any reports of contamination or poor performance extremely seriously.
Please accept our sincere apologies for the inconvenience. We would be grateful if you could provide the batch number (found on the bag) and, if possible, a photograph of the product contents. This will assist us in investigating the matter further.
Kindly email this information to sales@supagrow.co.uk, and a member of our technical team will review the issue as a matter of priority where we would also appreciate the opportunity to discuss a suitable resolution with you directly.
We value your feedback, as it plays a vital role in helping us maintain the standards that longstanding customers such as yourself expect and deserve. Please be assured that we are treating this matter with the utmost care and urgency.
Thank you once again for bringing it to our attention.
Kind regards,
SupaGrow Team
🌱
Plants died…
All my tomato seedings which were growing well in seed compost died the day after I potted them o n into the potting compost I bought from the range. I then did an experiment. Six seeds into my seed sowing mix potted on 3 into the Range compost mix and 3 into an alternative compost from another compost( it was B &,Q) which normally wouldn't use. The Range ones died within 2 days an the others are thriving. I have now lost all my specialist F1 tomatoes which I cannot replace
April 24, 2025
Unprompted review
Reply from SupaGrow
Morning Mr Johnson,
Thank you for taking the time to share your experience with us. We are truly sorry to hear about the loss of your tomato seedlings and the disappointment this has caused, particularly with your specialist F1 varieties which, as you mention, are irreplaceable at this stage of the season.
We take all feedback seriously—especially when it concerns potential issues affecting plant health. The outcome you’ve described does not reflect the standard we expect from our potting compost products, and we fully understand your frustration.
We would like to investigate this matter further and would be grateful if you could provide the following:
• The batch printed on the bag
• Any photographs you may have of the compost or affected seedlings
Please email this information to sales@supagrow.co.uk, and a member of our technical team will review the issue as a matter of priority. We would also like to discuss a suitable resolution with you directly.
Once again, we offer our sincere apologies for the disappointment and inconvenience caused, and we appreciate you bringing this matter to our attention.
Warm Regards
Supagrow Team
🌱
The worst compost I have ever come…
The worst compost I have ever come across. It killed various seedlings that I potted on using it (cosmos, chilli plants, zinnia, phlox) and killed off all the radish I put in it in a raised bed.
When discarding the seedlings, the smell of the compost with horrific. It was thick and smelt of sewage.
There were also random bits of glass and metal in the compost.
Please avoid this product!!
April 26, 2025
Unprompted review
Reply from SupaGrow
Thank you for your feedback.
We are genuinely sorry to hear of the issues you've encountered with the Supagrow compost and fully understand your frustration.
A smell is completely normal and will 100% disappear over time.
The presence of foreign matter of glass or metal is certainly not in line with our quality standards, and we take such reports very seriously. Our compost products are subject to screening and quality control procedures, and your experience clearly appears to fall short of what we aim to deliver.
We would appreciate the opportunity to investigate this matter further. If you are able to provide the batch number and, if possible, photographs of the material in question, our technical team will review it thoroughly to ensure appropriate action is taken.
Please contact us at sales@supagrow.co.uk
Thank you once again for bringing this to our attention.
Kind regards,
Supagrow Team
I terrible stench
I bought 4 bags of the organic compost from the range as it was very reasonable, however it absolutely stinks. What is in this stuff! Going to have to take it back as I can’t have that around my dog. Very disappointed. I would appreciate confirmation from Supagrow that this is safe for people & animals to be around.
April 26, 2025
Unprompted review
Reply from SupaGrow
Thank you for bringing your concerns regarding SupaGrow Compost to our attention. We sincerely apologise for any inconvenience you have experienced and appreciate the opportunity to respond.
All Supagrow products contain Natural Peat Free Organic Material, and produced to a consitent high quality, with added nitrogen to enrich your current garden beds.
To address your queries:
1. Odour
We understand your concern regarding the smell. While some initial odour can be present due to the organic components, it should dissipate naturally once the topsoil is spread and exposed to the air and weather.
2. Animal Safety
We would like to reassure you that SupaGrow Topsoil is safe for domestic animals.
Should you require any further clarification or wish to speak with a member of our technical team, please do not hesitate to contact us at sales@supagrow.co.uk. We will be happy to assist you.
Best regards,
Supagrow Team
🌱
Bought 4 bags supergrow top soil
Bought 4 bags supagrow top soil. The range. For a large area of my lawn to seed.
It stinks and nothing will grow in it.
What are the added nutrients?.
It smells like excrement mixed with toxins.
I want to know if its even safe for my animals to be near.
April 4, 2025
Unprompted review
Reply from SupaGrow
Dear Mr Woods,
Thank you for bringing your concerns regarding Supagrow Topsoil to our attention. We sincerely apologise for any inconvenience you have experienced.
To address your queries:
1. Product Composition
Supagrow Topsoil contains a controlled, slow-release fertiliser, making it a reliable, nutrient-rich choice suitable for a wide range of planting needs. It also includes a unique water-retentive material, designed to store moisture within the soil fibres and release it gradually to support healthy plant development.
Key features include:
o Analysed BS3882:2015
o PH Typically 7.5- 8.5
o Organic content typically 9.5%
o 100% Peat-Free & Sustainable
o Consistently Fertile
o A Versatile and Balanced Blend
o Minimal Stone Content
o Enriched with Soil Conditioners
2. Odour
We understand your concern regarding the smell. Please be assured that any initial odour should dissipate naturally over time once the product is spread and exposed to the elements.
3. Animal Safety
Supagrow Topsoil is perfectly safe for domestic animals.
Should you require further clarification or wish to speak with a member of our technical team, please do not hesitate to contact us at sales@supagrow.co.uk. We would be happy to assist.
Best regards,
Supagrow Team 🌱
Had some great organic compost from…
Had some great organic compost from them, also had a few bag bags but out of 300 bags so only 20 were bad which got replaced.
Great company and will continue to get my compost from them
April 22, 2025
Unprompted review
Reply from SupaGrow
Hi!
We appreciate your feedback on the Supagrow Organic Compost and the prompt resolution of the issue with the bags.
It's good to hear that despite the minor inconvenience, you found the company's service satisfactory overall.
Consistency in quality and customer service is crucial, and I'm glad to hear they met your expectations.
Happy Gardening 🌱
Awful stuff
Awful stuff. From the stench that comes from it for the first few days down to the mixture and the growth if plants. It doesn't hold moisture doesn't feel like compost at all and has killed several plants of mine. Highly disappointed and won't be buying again and do not reccomend anyone else to purchase it just because it's cheap! It's worth spending that bit more.
April 3, 2025
Unprompted review
Reply from SupaGrow
Thank you for sharing your feedback with us. We are truly sorry to hear about your disappointment with our Supagrow Compost.
Ensuring the quality and effectiveness of our compost is of utmost importance to us, and your experience appears to fall well below our standards.
We sincerely apologise for any inconvenience or loss you've encountered due to the issues with moisture retention and plant growth. This is certainly not the experience we want for our customers. Please be assured that we take your feedback seriously and will investigate the matter thoroughly to prevent any recurrence.
If you are open to it, we would appreciate the opportunity to discuss your experience further and see how we can make things right for you. Please forward any photographs, receipt of purchase to sales@supagrow.co.uk and one of our technical team will contact you.
Once again, we apologise for the inconvenience caused. Your satisfaction is our priority, and we hope to restore your trust in our products.
Supagrow Team
🌱
Truly awful compost
Just as many others have pointed out this really isn't very good soil. Luckily I hadn't actually planted many plants at all yet and therefore may have saved myself a lot of money but I noticed my one plant that normally is super easy and particularly low maintenance most years suddenly looks very lifeless as soon as I had planted it in this soil. I therefore investigated and had come across these reviews, it's obviously not an isolated event. Please do not buy this soil just because it is cheap.
March 29, 2025
Unprompted review
Reply from SupaGrow
Thank you for sharing your feedback.
We're sorry to hear about your experience and appreciate you bringing this to our attention.
While the vast majority of our soil meets high-quality standards, we take any concerns seriously.
To assist you further, we kindly ask that you send photographs, proof of purchase, and any additional details to sales@supagrow.co.uk
Our technical team will review your case and reach out to discuss a resolution.
We value your input and look forward to finding a solution for you!
Warm regards
Supagrow Team 🌿
This killed my plants too
Unfortunately like the previous reviewer's experience, this also killed my plants. I recently purchased 4 bags of this compost last weekend and was excited to pot on my plants that I had nurtured from seed. Within days they've dried and died. All my hard work has been undone. I suspect there are sterilising chemicals in this compost to keep it weed free that is also kiling plants, rendering it 'NOT fit for purpose'. The texture of the soil appeared good, I used a sieve and there werent many bits however the colour was much darker than usual compost. I wish I had checked reviews before buying. To the manufacturer: I still have the bags and can provide batch numbers and photographic evidence if it helps.
March 26, 2025
Unprompted review
Reply from SupaGrow
Morning Sam,
We're truly sorry to hear about your experience with our compost, and we completely understand how frustrating it must be to lose plants you've carefully nurtured. This is certainly not the result we want for our customers.
We take product quality very seriously, and we'd like to investigate this further. Could you please provide us with the batch numbers and any photos you have? This will help our team look into potential issues with the specific batch you received.
Sales@supagrow.co.uk
Thanks Supagrow Team
Zero star rating
Zero star rating. Purchased a bulk order last year. On opening the bags there was an awful smell, a mixture of fire ashes and chemicals. Killed the plants I potted on ( including some expensive ferns ). Horrible texture, no body at all. Vile stuff, I don't know how this stuff is still on sale. Avoid at all costs
March 31, 2024
Unprompted review
Reply from SupaGrow
Good Morning Linda,
I'm really sorry to hear about your experience with your order.
It sounds incredibly frustrating and disappointing, especially with the impact it had on your plants, including the ferns. This definitely isn't the quality or experience we aim to provide.
We take feedback like yours very seriously. Could you please send further details about your order to sales@supagrow.co.uk so I can investigate this issue further.
Please include, Date of purchase, where it was purchased, along with any photographs you have of the stock or your plants and one our technical team will contact you!
Once again, I sincerely apologise for the inconvenience and frustration this has caused. We truly appreciate your feedback and are committed to making things right.
Looking forward to your response.
SupaGrow Team
Bought 4 bags to use on my lawn only to…
Bought 4 bags to use on my lawn only to find all sorts of stuff through it - stones bits of wood, plastic-not impressed and won't be buying again.
February 10, 2025
Unprompted review
Reply from SupaGrow
Good morning!
Thank you so much for reaching out and sharing your feedback with us. We're truly sorry to hear that your recent experience with our product didn't meet your expectations. Ensuring the quality of our products is our top priority, and we're committed to resolving this issue promptly.
Could you please provide us with more details? Any batch information or photos of the product would be incredibly helpful for our investigation. You can send them directly to sales@supagrow.co.uk, and our dedicated technical team will reach out to assist you further.
We appreciate your understanding and patience as we work to make this right for you.
Warm regards,
SupaGrow Team 🌱
Nah stinks like chemicals brought 4…
Nah stinks like chemicals brought 4 bags for a tenner but I suppose what do you expect for that price used one bag tried to mix with some soil to calm the smell down but nothing would help
It’s clumpy with god knows what and would not recommend to anyone if anything this company needs to be investigated for what’s in these products there sending out
October 3, 2024
Unprompted review
Reply from SupaGrow
Thank you for your feedback. We're sorry to hear that the product did not meet your expectations. We take quality concerns very seriously and would like to investigate this matter further.
If possible, could you please provide us with more details, such as batch information or images of the product? This would help us conduct a more thorough investigation.
Please send them to sales@supagrow.co.ukand one of our technical team will contact you.
Kind Regards
SupaGrow Team
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