Sterilised Mushroom Grow Bag 1300g with Injection Port | 123GrowBag

Looking for a clean, no-fuss way to start your next cultivation project? The Sterilised Mushroom Grow Bag 1300g with Injection Port combines a sterilised grain base and a nutrient-rich bulk substrate in one sealed bag. No transfers, no extra preparation — simply inoculate and let the mycelium do the work.

An all-in-one sterilised substrate grow bag

Produced in controlled batches for consistent cleanliness and stable availability, this ready-to-inoculate grow bag holds 1300g of prehydrated substrate (60–65% moisture). The blend pairs a sterilised grain base, such as rye or sorghum, with a bulk mix of coco coir, vermiculite and gypsum to support steady colonisation. A self-healing injection port and a 0.2 µm microfilter handle inoculation and gas exchange in a single, sealed unit.

Why growers choose this grow bag

• Less hands-on work: the grain and bulk substrate come combined, so there’s no need to mix or transfer between containers.
• Lower contamination risk: the sealed bag, microfilter and self-healing port keep the substrate protected during inoculation.
• Consistent results: controlled batch production keeps moisture and composition stable from bag to bag.
• Approachable setup: a practical option for beginners and seasoned hobby cultivators who prefer minimal equipment.
• Reliable availability: continuous production supports fast order fulfilment.

Inoculation is done directly through the injection port using your own spore syringe or liquid culture. The bag is intended as a cultivation supply and is supplied without spores. You can pair it with related items from our Grow Supplies range, or browse other Mushroom Grow Bags to suit your project.

What’s included

• 1300g sterilised mushroom substrate (grain base + nutrient-rich bulk blend)
• Self-healing injection port for direct inoculation
• 0.2 µm microfilter for gas exchange

Frequently asked questions

What is included with the Sterilised Mushroom Grow Bag 1300g?

Each bag contains 1300g of prehydrated, sterilised substrate combining a grain base with a bulk blend, plus a self-healing injection port and a 0.2 µm microfilter. Spores are not included.

Do I need extra equipment to use this grow bag?

The bag is built as an all-in-one unit, so no transfers or additional containers are required. You only provide your own inoculant for the injection port. Some growers add accessories such as a Full Spectrum LED Grow Light for the fruiting stage.

Is this grow bag suitable for beginners?

Yes. The combined substrate and sealed design make it a straightforward option for first-time hobby cultivators, while experienced growers value the consistent batch production.

Order your sterilised grow bag today

Ready to get started? Add the Sterilised Mushroom Grow Bag 1300g with Injection Port to your cart for discreet packaging and fast dispatch from the Netherlands. Explore the full Shroomshop for more grow supplies and accessories.