Spore Supplies FAQs

We supply All-In-One Bags, sterile grain, substrate, liquid cultures, and equipment for mushroom cultivation. Each product page explains what is included and how it is intended to be used.

An All-In-One (AIO) Bag is a straightforward starting point for growing most mushroom species, because its grain and substrate are already prepared in one bag. Choose a compatible liquid culture separately and follow our growing guides.

An All-In-One Bag contains prepared grain and substrate; mushroom culture is sold separately unless the specific product page says it is included. Check the listing’s “what’s included” details before ordering.

Sterilised grain and substrate give your chosen mycelium a clean starting material without competing organisms. Handling and inoculation still matter after the bag is opened or used; see our how-to guides for guidance.

Our sterile grain and substrate bags are prepared in batches, autoclave sterilised, and sealed before dispatch. Ingredients and the intended use vary by product, so check the relevant product listing for its details.

Sterile bags are produced in batches, and product pages show any additional production lead time before dispatch. Use your bags promptly after delivery and follow the storage advice for the product you bought.

Keep the bag sealed in a cool, dry place away from direct sunlight, and avoid pressing on its filter patch or injection port. Follow any product-specific storage instructions on the listing and inspect the bag before use.

Our Magic Myc® Sterile Guarantee guarantees that every “sold as sterile” product that we sell is 100% sterile at the time of delivery. If you see contamination before use, submit the claim form with clear evidence within 30 days of delivery; we assess each claim individually.

Contact us promptly with your order number and photos of the parcel and affected items so we can review the problem. Damage, missing items, and incorrect products are handled separately from pre-use contamination claims.

You can request a return for an eligible unused item within 30 days of delivery; contact us before sending it back. Return postage for a change-of-mind return is normally your responsibility, while contamination claims for products sold as sterile follow the Sterile Guarantee. See the Refund Policy for exclusions and your rights if an item is faulty.

In-stock orders placed before 3pm Monday to Friday are usually dispatched the same day, but may take up to three working days; later orders, weekend orders, and bank holiday orders usually dispatch on the next working day. Products made or assembled to order may have extra lead time shown on their listing; see Deliveries.

Most mainland UK parcels use a next-day DPD service, but delivery dates are estimates and prices depend on order weight and destination. Mainland orders over £50 qualify for free delivery up to 150kg; Northern Ireland uses a two-day service and qualifies for free delivery over £100. Check the full delivery rates and exceptions before ordering.

Yes. We send parcels in unbranded outer packaging with only the plain delivery label required by the courier.

Most of our products are designed with indoor cultivation in mind. Some gourmet species can also fruit outdoors when conditions suit them; check the product instructions and our growing guides before moving a block outside.

Our published customer service hours are Monday to Friday, 8am–10pm, and Saturday to Sunday, 8am–12pm. Call 0330 133 1728 or use the contact page; if we miss your call, please leave a voicemail.