This fully colonized B+ grow kit produces multiple harvests within weeks - no experience needed. The mycelium has already done the hard work, you just spray and watch as thick, meaty mushrooms emerge. Even first-timers get guaranteed results with this resilient strain. B+ is famous for generous yields and reliable growth in various conditions.
The white mycelium has completely taken over the substrate. You open the box, place the tub in the included grow bag, and within 1 to 3 weeks you'll spot the first pins popping up. This B+ grow kit is ready to fruit - the mycelium is primed to produce its first generation of mushrooms.
Important: This 100% mycelium grow kit works differently than regular kits - do not soak or submerge it in water. Check our detailed grow guide for the complete step-by-step process, specifically written for this fully colonized B+ variant.
The B+ strain has been growing in cultivation rooms for decades and has proven itself as one of the most dependable varieties around. While other strains throw tantrums when temperatures fluctuate or humidity shifts, B+ just keeps on trucking. Those thick, sturdy stems can support mushrooms that sometimes weigh 40 grams each. You're getting robust specimens with light brown caps that slowly unfold to their full size.
People love B+ for the warm, mellow experience this strain delivers. Many users report little to no stomach discomfort - something other varieties are notorious for causing. B+ has earned its reputation as the friendly giant: clear, euphoric moods with vivid colors and patterns, without the overwhelming intensity some other strains bring to the table. This balance is exactly why B+ remains a favorite among beginners and seasoned growers alike.
The substrate consists of a carefully blended mix of grains and vermiculite, completely colonized by pristine white B+ mycelium. You'll smell that characteristic earthy mushroom aroma when you remove the lid - a sign the mycelium is healthy and ready to fruit.
Forgives Rookie Mistakes: Forget to spray one day? B+ keeps growing. Temperature a bit too cool? No problem, mushrooms still appear. This strain adapts where others give up, making your first growing experience practically foolproof.
Impressive Mushrooms You Won't Forget: When the caps unfold, they reach diameters up to 8 centimeters. The fleshy fruit bodies feel solid between your fingers - substantial specimens worth waiting for. The golden-brown color fades to almost white at the edges, a trademark feature that makes B+ instantly recognizable.
Comfortable Experience Without the Hassle: B+ earned its reputation for good reason. While other strains might upset your stomach or feel heavy, B+ stays gentle on your body. Users describe the experience as warm and welcoming - you feel at ease while the world around you comes alive.
Place the tub in the grow bag, fold the top twice and secure with paperclips. Spray the surface lightly with water daily - you'll see the mycelium respond by forming tiny white dots. Typically, the first pins shoot up after 10 to 21 days, depending on temperature and humidity. These grow into full-sized mushrooms within 3 to 7 days. Gently twist and pull them off when the veil under the cap starts to tear. The mycelium recovers and produces a new flush within 2-3 weeks. Patience and optimal conditions are crucial - remember, this is a natural product that follows its own rhythm.
The key difference lies in the preparation and substrate state. A standard grow kit requires you to soak the substrate in water for 12 to 24 hours before the growing process can begin. The 100% mycelium kit eliminates that step entirely because the substrate is already optimally hydrated and fully colonized with active B+ mycelium at the time of delivery. Read the dedicated grow guide for this 100% mycelium kit for the complete step-by-step process.
Under good growing conditions, this kit typically produces 3 to 5 flushes, with each flush yielding between 200 and 400 grams of fresh mushrooms. The first flush generally delivers the largest harvest, with subsequent flushes gradually decreasing in volume as the substrate becomes depleted. After each harvest the mycelium needs approximately 2 to 3 weeks to recover and initiate a new fruiting cycle. The total yield depends heavily on maintaining a stable temperature between 20 and 25 degrees Celsius, keeping humidity high, and practising good hygiene when handling the kit between flushes.
Standard grow kits ship with substrate that has not been fully hydrated, which is why soaking is a necessary first step. The 100% mycelium kit is produced with substrate that reaches its ideal moisture level during the colonisation process itself. The mycelium has penetrated every grain in the mix and established a perfect water balance. Always follow the instructions specific to this kit, and see our article on common magic mushroom grow kit mistakes to avoid other pitfalls.
B+ is widely considered the single best strain for first-time growers. Its exceptional resilience means it tolerates minor errors in temperature, humidity, and watering that would cause more sensitive strains to stall or fail. If you forget to mist one day or the room drops a few degrees below the ideal range, B+ continues growing where other varieties would stop. Beyond its forgiving cultivation characteristics, the B+ produces impressively large mushrooms with caps reaching up to 8 centimetres across, making the growing experience visually rewarding.
The ideal harvest moment is when the veil, the thin membrane connecting the underside of the cap to the stem, begins to tear but has not fully separated. At this stage the psilocybin concentration is at its peak. You will notice the cap edges pulling away from the stem and the veil stretching thin. Gently twist the mushroom at its base with a slight rotating motion to detach it without tearing the substrate.
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