Growkit B+

Growkit B+ is a growing kit containing mature mycelium. This growbox does not contain any illegal substances and is intended for research purposes only. We strongly advise against growing psilocybin mushrooms, as the substances contained in the mycelial fruits are illegal in Poland and many other countries.

Buying growkit means confirming that it will not be used in an illegal manner. Please note that we are not responsible for non-compliance with these recommendations. Before making a purchase, check the applicable laws on growkits in your country.

Storage

Our company stores products in coolers at 2–5°C. Under these conditions, the manufacturer guarantees freshness for up to 6 months. After purchase, place the product in the refrigerator immediately. You have 72 hours to conduct laboratory tests—after that, you risk breaking the law.

What's Included

• Growbox – 1200 ml capacity
• Carton packaging
• 2 x clip to close the bag
• Breathable perforated bag

Note: Due to legal restrictions, the kit does not come with a cultivation manual. If cultivation is legal in your country, visit our blog for more information.

Characteristics

Growkit B+ was the most widely purchased mushroom kit in the 1990s due to its simplicity and high temperature resistance. There is evidence it can grow even at 7°C, although the optimal temperature is 23–26°C. The mushrooms are large and often grow quickly out of the bag. The stems are flexible and thick compared to other Psilocybe cubensis strains.

Variety

Psilocybe Amplus

History of B+

The B+ variety was created in Florida by a mysterious person known as Mr. G. Although it's officially a Psilocybe cubensis, he claimed to have hybridized it with Psilocybe azurescens. Many mycologists consider this genetically impossible—comparable to crossing a human with an ape. The true origin remains a mystery.

How to Grow B+?

In Poland, cultivating psilocybin mushrooms is illegal, so we strongly discourage doing so. If you're in a country where cultivation is allowed, you can read our guide on growing magic mushrooms.

How Does B+ Work?

Users report that B+ causes less nausea than other varieties. Visual effects are moderate, and the overall feeling is warm and pleasant. It's considered a good choice for beginners.