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Mason Jars

5.00 out of 5
(1 customer review)


Used extensively by amateurs and professionals world-wide, mason jars are synonymous with the mushroom cultivation industry. Our UK manufactured, Kilner mason jars are suitable for spawn runs, liquid cultures, BRF cakes or even bottle grows.

We offer two of the most popular mason jar sizes, 1 litre & 0.35 litre – These jars are also known as canning jars or preserving jars.

Hand-Packed with ❤ in Bristol, UK.

Our larger 1 litre mason jars are often used for grain spawn production for which they are perfect.

Our smaller 0.35 litre jars have a slight taper and smooth inside. Commonly used for making larger sized BRF cakes and to store liquid cultures.

Lids can be easily modified with injection ports, syringe filters or to simply have holes punched to allow for adequate air exchange if using Tyvek as your filter.

  • Wide-mouth openings
  • Fits our reusable Synthetic Filter Discs
  • Interchangeable and reusable lids & bands
  • Fully autoclaveable
  • Airtight
  • Made in the UK by Kilner

For replacement jar lids and collars, please visit our Replacement Lids & Rings (Mason Jars) listing.


Free delivery on all orders over £150

Backed by our 100% Satisfaction Guarantee.



Frequently Bought Together

BUILD YOUR OWN GEAR! - View our kit lists @ kit.co

Fruiting Room Lab Substrate/Spawn Preparation
Must Have Books Order Preparation
  • Packaging & Scales
  • Mushroom Dehydrator Build

Tincture Production

Vlogging Equipment & Digital Production


1 review for Mason Jars

  1. 5 out of 5


    these smaller jars are bigger than normal jam jars and fit snugly inside my pressure cooker. Used for making BRF cakes as advertised. Good quality and genuine jars.

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Additional information

Jar Size

1 litre, 0.35 litre

100% FREE Mushroom Giveaway


FREE P&P | No Purchase Necessary | One Per Household.

Send Me Some Mushrooms!

Free Mushroom Selection Box

A selection of our finest organic dried mushrooms

No catches, we'll send one to you a dried gourmet mushroom selection box for free, we'll even pay the postage.
Why are they free? We just want to let you sample our mushrooms, if you like them, (which we're sure you will!), you might want to buy some more from us in the future.