B+ XL Magic Mushroom Grow Bag
The B+ XL Mushroom Grow Bag contains a fully colonized substrate with Psilocybe cubensis mycelium and is immediately ready for the fruiting phase. B+ is one of the most well-known cubensis varieties among home growers and is valued for its robust growth character, stable development, and relatively accessible cultivation. Thanks to the fully colonized substrate, you do not need to inoculate, sterilize, or work with a spore syringe yourself.
B+ is a classic Psilocybe cubensis variety known for its robust growth, stable development, and medium to large fruiting bodies.
B+ has built a strong reputation within the cultivation world over the years. The variety is chosen by both novice and experienced growers due to the combination of accessibility, vigor, and relatively predictable development.
What is the B+ Mushroom Grow Bag?
This grow bag contains a nutrient-rich substrate that is fully colonized with healthy Psilocybe cubensis B+ mycelium. Therefore, the most sensitive steps of the cultivation process have already been completed, and you can start the next growth phase immediately.
B+ is among the better-known cubensis varieties and is often chosen by growers seeking a relatively accessible species with a robust growth character and classic fruiting bodies.
Why choose B+?
B+ is often chosen by growers seeking an accessible and stable cultivation experience. The variety is known for being relatively forgiving and can generally tolerate minor changes in the cultivation environment better than various more specialized cubensis lines.
- Fully colonized substrate
- Ready for the fruiting phase
- No spore syringe or sterilization required
- Suitable for novice growers
- Robust growth character
- Medium to large fruiting bodies
- Multiple flushes possible under suitable conditions
This combination of traits makes B+ an interesting choice for growers who value ease of use and relatively stable development.
Who is this grow bag suitable for?
The B+ grow bag is suitable for a wide range of growers. Beginners especially appreciate its accessible nature, while experienced growers may choose B+ for its classic growth form and robust genetics.
- Novice growers
- Home growers who want to work with fully colonized substrate
- Growers seeking a relatively stable cubensis variety
- Users who want to try to achieve multiple flushes
- Experienced growers who appreciate classic B+ genetics
Growth characteristics of B+
The development of B+ is generally uniform. The mycelium has a robust growth character, and under suitable conditions, the fruiting bodies can develop into medium or relatively large mushrooms.
- Average growth rate
- Robust mycelium development
- Relatively stable growth cycle
- Medium to large fruiting bodies
- Classic Psilocybe cubensis growth form
Due to these properties, the emphasis for B+ is primarily on accessibility, stable development, and a recognizable cubensis growth form.
How do you use the B+ Grow Bag?
Since the substrate is fully colonized, you can start the fruiting phase immediately. Ensure a clean working environment and keep conditions as stable as possible.
Note: small cut under the air filter
Under the air filter of the grow bag, there is a small cut made by the manufacturer. This opening is intended to release excess COâ‚‚ and pressure when the grow bag bulges during the cultivation process. This is normal and not a defect. You do not need to do anything about this, and the opening does not need to be taped off.
Click here: Mystic Fungi Manual
- Place the grow bag in a bright spot without direct sunlight.
- Maintain a stable temperature between approximately 20°C and 24°C.
- Ensure sufficient fresh air.
- Check the humidity regularly.
- Work cleanly and touch the inside of the bag as little as possible.
B+ is known for being relatively robust, but stable conditions remain important for this variety as well. Avoid major changes in temperature and humidity during development.
What can you expect during cultivation?
B+ typically develops classic cubensis fruiting bodies with sturdy stems and golden-brown to caramel-colored caps. Under suitable conditions, the fruiting bodies can become relatively large.
Multiple flushes are possible when the mycelium remains healthy and conditions are suitable. The final yield depends on care, hygiene, temperature, humidity, and correct hydration between harvest rounds.
Important factors for a successful grow are:
- A constant temperature
- Sufficient humidity
- Regular air exchange
- Careful and hygienic work
- Correct hydration between flushes
How does B+ compare to other species?
Within the Psilocybe cubensis range, B+ is primarily known for its robust and accessible growth character. This makes the variety suitable for growers who do not wish to start immediately with more demanding or specialized genetics.
- More accessible growth character than Penis Envy
- Medium to larger fruiting bodies than various compact cubensis varieties
- More classic growth form than Jack Frost
- More pigmentation than True Albino Teacher and other albino variants
The exact growth rate, shape, and yield may vary per cultivation. Temperature, humidity, air exchange, and the condition of the mycelium play a crucial role in this.
Practical cultivation tips
- Always work with clean hands, clean surfaces, and clean equipment.
- Avoid direct sunlight on the grow bag.
- Avoid major temperature fluctuations.
- Ensure sufficient fresh air during the fruiting phase.
- Check the humidity regularly.
- Hydrate the substrate carefully between flushes.
- Harvest on time to properly support the next growth phase.
Safety and points of attention
Even with a robust species like B+, hygiene remains important. A clean environment helps limit the risk of contamination and supports healthy mycelium development.
- Disinfect hands, work surfaces, and tools beforehand.
- Avoid direct sunlight and environments that are too warm.
- Regularly check for abnormal colors or unwanted mold growth.
- Touch the substrate as little as possible.
- Use the grow bag only according to the included instructions.
Contents B+
- Contents: 2200 ml
- Variety: Psilocybe cubensis B+
- Phase: fully colonized
- Harvest yield: up to 700 grams fresh weight
