Question 1

What is your Harvest Guarantee?

Accepted Answer

At Fat Fox Mushrooms, we want you to have the best growing experience possible. All of our ready-to-grow mushrooms kits are covered by our Harvest Guarantee, which means that we guarantee at least one flush of mushrooms. We offer expert mushroom-growing advice, so we are here to help if you run into any challenges. Simply get in touch via email or WhatsApp with some photos of your kit as soon as you experience any issues and we'll be happy to check things for you and get it back on track.

We strongly encourage you to get in touch with us as soon as you notice that things aren't going as they should so that we can help. Please note that we will need to take a look at up-to-date photos of your kit and we cannot help if you have already disposed of it. If your kit still fails to produce mushrooms after following the instructions and our troubleshooting recommendations, let us know and we’ll replace it! Our Harvest Guarantee only applies to our Ready-To-Grow Kits. We're still more than happy to help you troubleshoot, but with any kits or products that require you to inoculate at home or are grown outdoors, we cannot guarantee they will fruit due to the many factors that are outside of our control.

Question 2

What substrates do you use for your mushroom grow kits? Are they certified organic?

Accepted Answer

Our mushrooms are grown on a variety of (peat-free!) natural and organic substrates, each meticulously tailored to suit different species and provide best growing results. Nearly all of our growing mediums are derived from by-products of other industries, constituting approximately 94% of our total materials. Our kits also include UK grown organic wheat grain.

This includes PEFC certified hardwood briquettes, produced in adherence to HACCP food safety standards and made from sawdust sourced from a single-site sawmill. Additionally, we incorporate straw stems from British grain harvests and organic wheat bran into our substrate mixes. PEFC, which stands for "Programme for the Endorsement of Forest Certification," is a globally recognised non-profit organisation dedicated to enhancing transparency in the wood-based product industry. By opting for PEFC-certified materials, consumers can rest assured they are supporting sustainably managed forests.

While our kits aren't organic certified, we've diligently sought out the highest quality, sustainably sourced and organic substrates.

Question 3

How long does it take to grow mushrooms from a ready-to-grow kit?

Accepted Answer

This depends on the species, but it can take anywhere from 1 week to 4 weeks to start pinning (beginning of formation of fruiting bodies aka. baby mushrooms) and another 1-2 weeks before the mushrooms are ready to harvest. The exception is reishi which takes several months to a year to grow and reach maturity.

Rate of growth is also affected by the environment, particularly temperature and humidity, with growth slowing down in the colder months.

Question 4

I don’t want to start my kit straight away. How long can it be stored for/is there an expiry date?

Accepted Answer

We generally advise that our kits are started within 2 weeks of arrival for best results. However, we understand that sometimes life gets in the way! If you’d like to delay starting your kit, you can keep it somewhere cool, dark and away from sources of heat or refrigerate it for up to 1 month.

IMPORTANT!: Pink oyster and Golden Oyster cannot be stored in the fridge as they are tropical species and cannot withstand temperatures below 10°C.

Question 5

Are Fat Fox mushroom growing kits suitable for vegans? I've heard that some mushrooms are grown on animal products.

Accepted Answer

While some mushroom companies use blood fish and bone meal as a source of nitrogen, we do not use any animal products in our mushroom growing kits. We use only vegan-friendly natural substrates such as sawdust, straw & grain.

Question 6

How big are your kits?

Accepted Answer

Ready-To-Grow: 
Comes in a box measuring 23cm x 16cm x 16cm
2kg
Tea & Coffee recycling kit: 
Comes in a box measuring 18cm x 11cm x 2cm

Question 7

How many mushrooms will your kits grow?

Accepted Answer

We guarantee at least one harvest from our ready-to-grow kits, but if you’re willing to wait it’s likely that you will see additional flushes. Different  species will produce different total quantities of mushrooms. We have listed the maximum expected yield on each of our growing kit product pages.

Question 8

Is the packaging you use recyclable?

Accepted Answer

Yes! Our cardboard boxes are FSC certifed, made from recycled materials and produced by Kite Packaging, a certified carbon neutral supplier. We also use gummed tapes which are biodegradable. The only thing that is not recyclable is the specialist plastic filter bag. Unfortunately, there currently is no suitable alternative for these filter bags, however we reuse these bags as much as possible. For this reason, we encourage you to send us back your undamaged filter bags (carefully cut open alongside the top edge to remove the substrate) so we can use them again.

If you wish to Include your name and contact details we will enter you into our fungi prize draw!

Send them to:
Fat Fox Mushrooms Unit A/4 43-53 Markfield Road, London N15 4QA

Question 9

How can I dispose of my mushroom kit once it’s done?

Accepted Answer

Once you've taken out the mushroom fruiting block from the bag, you've got a couple of options. You can either bury it outside, where it might get some extra energy and sprout more mushrooms, or toss it into your compost to break down further. When it comes to the packaging, you can recycle or compost the cardboard and paper. As for the filter bag, if it's still in good shape, you can send it back to us to be reused, otherwise it can be disposed of in your general waste.

Carefully cut open alongside the top edge to remove the substrate so we can use them again.

If you wish to Include your name and contact details we will enter you into our fungi prize draw!

Send them to:
Fat Fox Mushrooms Unit A/4 43-53 Markfield Road, London N15 4QA

Question 10

Can I take your kits overseas?

Accepted Answer

We only ship within the UK, however if you would like to take one of our kits outside of the UK it shouldn’t be a problem. Please check the rules for the country you are travelling to first.

Question 11

How do I redeem a gift voucher or promo code?

Accepted Answer

You can redeem a gift voucher of promo code at checkout.

Click to expand and enter your promo code or gift card number

Question 12

How do I combine mushroom grow kit and dual-extract tincture orders?

Accepted Answer

To combine a kit and tincture in one order:
First order a kit and receive a voucher code for FREE SHIPPING on the Fat Fox Thrive website.

Question 13

Where can I source a hardwood log for growing mushrooms?

Accepted Answer

If you aren't able to source a suitable log from a local tree surgeon, we recommend Hanging Wood. They provide sustainably harvested logs sourced from coppiced trees in their managed North Downs woodlands. This method involves cutting trees at the stem while leaving the root intact, allowing new growth to emerge naturally every 5–10 years.

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