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Mushrooms Guide

Mushrooms Guide

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Learn all about functional mushrooms in this comprehensive guide, discover the mushrooms we use in our blends, how we cultivate our mushrooms, and the science behind the fungi!


Mushrooms by Grass & Co. are naturally and organically produced for optimal results. Our mushrooms are cultivated in greenhouses on substrates native to each mushroom with natural airflow and lighting. The advanced extraction process delivers the most bio-available and potent compounds.

Grass & Co. Mushrooms are non-GMO, gluten-free, cruelty-free and contain no additives, mycelium, grains or any fillers.


When first using your Grass & Co. Mushroom Capsules,
we recommend you start low and go slow. Take the capsule with water at a time that works for you. Take care not to exceed the recommended limit found on the side of the product.



We ship our orders with Royal Mail these are delivered Monday – Saturday (excluding Bank Holidays). For every order you will receive tracking information and SMS updates if you provide your phone number. Please note, purchases made after 1pm on Friday and during the weekend will ship the following Monday.


Our First Class delivery is with Royal Mail tracked 24.

Orders placed after 1pm will go out the following day.

UK Standard Delivery (Free)

Our Standard delivery is with Royal Mail tracked 48 and is free on all purchases.
Orders placed after 1pm will go out the following day.

GRASS & CO LIMITED does not take responsibility for delivery times. We post all items promptly, but local couriers determine delivery time. We’d like to thank you in advance for your patience and please be assured that all orders are being despatched on time by the Grass & Co. team.


We currently offer shipping to a limited number of EEA Countries. Please contact us at before ordering. We charge GBP £10 for an entire subtotal per order to anywhere outside of the UK. This price will increase according to weight. All orders outside of the UK do not include VAT so there may be additional charges via our carriers. The Importer of the item pays VAT, customs duties and handling fees if applicable.


Grass & Co.'s award winning products are sustainably and ethically sourced.
We ensure the quality and safety of our mushrooms by rigorously testing every batch for harmful contaminants, gluten, heavy metals, and pesticides. Additionally, we guarantee specific amounts of active compounds such as beta-glucans in each batch. We only use pure, organic whole fruiting body extracts in our products. Quality and safety are our top priorities. We are proud of the Grass & Co. products that we have developed and will always be transparent about our ingredients and sourcing.

DREAM Batch KJ2104 Click here to open

DREAM Batch LG2101 Click here to open

POWER Batch KJ2102 Click here to open

RELAX Batch KJ2105 Click here to open

RELAX Batch LF2601 Click here to open

FOCUS Batch KJ2101 Click here to open

FOCUS Batch LG0701 Click here to open

FOCUS Batch LG2501 Click here to open

FOCUS Powder Batch 329139 Click here to open

BIOME Batch KJ2103 Click here to open

BIOME Batch LH1701 Click here to open

BIOME Powder Batch 328419 Click here to open

PURE Mushrooms Powder BLEND Click here to open

PURE Mushrooms Powder Lion's Mane Click here to open

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lady eating mushrooms by grass and co


Our mushrooms are grown in greenhouses on natural substrates with environmental conditions of fresh air, ambient temperatures and humidity. No sterile laboratories, sterile conditions and sterile mycelium on grain, just real mushrooms cultivated in a natural environment. All our products are tested for important beta-D-glucans and are free from starch and are hot water extracted.