Wood Ash · £/kg

Rated 5.00 out of 5 based on 4 customer ratings

Our sifted wood ash can be used in replacement of lime for cold water pasteurisation of substrates, a more natural and environmentally friendly way of preparing your mushroom substrates prior to inoculation.

When mixed with water, wood ash significantly raises the PH to 11-14 which kills most competitor organisms, leading to a fully hydrated and pasteurised substrate. Wood ash is mostly used to pasteurise straw, but can also be used to pasteurise hardwood pellets.

Our premium wood ash is the powdery residue left after the combustion of wood, in our case, untreated hardwoods. We collect wood ash from our partnering wood-fired pizzeria’s who save it for us in exchange for our mushrooms. We also top up our supplies during cold winter evenings when our wood-burner is running in our unit, again we only ever burn untreated hardwoods.

Cold water pasteurisation of substrates is becoming ever more popular with the home mushroom cultivator, it’s less energy intensive, eco-friendly, safer and easier. We use wood ash to pasteurise straw when growing our oyster mushrooms on a commercial level. We’ve found yields to be as high as energy intensive steam pasteurisation, and it costs us a lot less too!

1 good sized handful (approx 100g) is enough to raise a 55 gallon drum of water to a pH suitable for pasteurisation. Simple mix into water. The pH can be measured using our litmus paper strips.

Please review the FAQs and drop-down sections below before placing your order.

+ Technical Information

+ Shipping & Returns

FREE SHIPPING AVAILABLE ON ALL ORDERS OVER £90

Orders are typically dispatched on the same or next working day. However, please allow up to 3 working days for dispatch, plus any additional product lead times, especially during busy periods.

We ship our products in plain, unbranded, reinforced cardboard boxes with ample internal protection.

Our shipping couriers may leave parcels with a neighbor or in a safe place if no one is home to receive them. To prevent this, please select the designated signed-for service at checkout and ensure you are available to receive the parcel. Otherwise, the package will be held at your local sorting office or returned to us. Please note that we cannot be held responsible for lost, stolen, or missing parcels if the signed-for service is not chosen at checkout.

Larger orders that require multiple boxes will automatically be upgraded to DPD Local shipping, as they support multi-parcel shipments. Extremely large or heavy orders may need to be dispatched via a pallet.

If items are returned to us due to a failed delivery, a redispatch or restocking fee may apply. Please ensure that any held packages are collected from your local sorting office within 2 weeks to avoid them being returned.

We highly recommend upgrading to the ‘DPD Express Tracked’ service at checkout, as we find it to be the fastest, safest, and most reliable option. Please note that Royal Mail may occasionally experience delays in their sorting offices.

For more details, please refer to our shipping, returns and replacements policy.

Purchase today and earn a further 2.5% MAYA GOLD REWARD to redeem on your next order.

Wood Ash FAQ

Answers to frequently asked questions.

How will my product be packaged and shipped?

We invest significant time and resources to ensure our parcels are securely packaged and reach you safely and undamaged.

If your item requires a box, it will be shipped in a discreet, plain, sturdy, double-walled cardboard box of appropriate size, with unbranded packaging tape and ample internal protection to prevent damage during transit. While accidents are rare, they can occasionally happen.

Smaller, sturdy, and lightweight items will be sent in plain, unbranded padded envelopes.

All pallet orders are professionally strapped, wrapped, and equipped with corner protectors.

We also strive to minimize excessive packaging to help protect the environment.

Scroll down to see a section on our Shipping & Returns info, with links out to our policies

Can you do custom and bespoke orders?

Yes, we can accommodate your needs for any custom orders, substrate / grain mixes, special requests etc. Generally speaking, anything which is considered to be a custom order will have a bespoke price. Please contact us to discuss options.

Do you accept cash payments?

As an online-focused business, we prefer digital payments. However, for orders over £500, we do accept cash payments. Please contact us to process your order and arrange collection.

Can I collect my order from your facility?

We do not provide a standard collection service for orders under £500. If your order exceeds £500 and you wish to collect it, please contact us. Please note that, due to our insurance policies, we are unable to allow public access to our warehouse or offer tours of our facilities.

SHIPPING & RETURNS INFO

No fuss Shipping, Returns & Guarantee.

We aim to dispatch orders within 2 working days (Monday-Friday)
Free shipping option for orders over £90.00 - Shipping Policy
No questions asked returns & refunds policy - Returns & Refunds Policy

Additional information

PRODUCT REVIEWS

4 reviews for Wood Ash · £/kg

Rated 5 out of 5

Anonymous (verified owner) – July 26, 2020

Quality, speed delivery and the price was reasonable.
Rated 5 out of 5

Jack – July 31, 2019

leaving a review for burnt wood! ha! Umm. yeah, it's the ashes of burnt wood. I don't have a wood burner and would rather use wood ash than lime for pasteurisation, so I bought some wood ash and it works fine. thanks
Rated 5 out of 5

Damien Ellis – July 24, 2019

comes double sealed in a zip-lock bag. raises pH as stated. better for the environment than lime
Rated 5 out of 5

Jeremy – July 18, 2019

great for high ph lime pasteurisation of straw for mushroom cultivation. Made water 13pH which is perfect. I'm sure the wood ash provides additional nutrients to the straw without increased nitrogen levels. Better for the environment than lime.