Brown Mushroom Strains

The world's most grown brown mushroom strains

The two most widely grown brown mushroom strains in the world are Amycel’s own Heirloom and Brawn. Patented genetics. Deep color, dense form, and reliable performance.

Deep brown color

Heavy-bodied and dense

Consistent strong form

High pick rate

Amycel Exclusive

Heirloom

Agaricus bisporus · Released 2005

The #1 selling brown hybrid worldwide. Heavy-bodied. Best for Portabella, Baby Bella, and Crimini production. Genetically unique, Amycel exclusive. Cannot be crossed with other brown strains.

Amycel Exclusive

Brawn

Agaricus bisporus · Released 2005

Often a darker cap than Heirloom. Ideal for varied size mixes. Genetically unique, Amycel exclusive. Cannot be crossed with heirloom or other brown strains.

Amycel Exclusive

Kodiak

Agaricus bisporus · Released 2005

Often a darker cap than Heirloom. Ideal for varied size mixes. Genetically unique, Amycel exclusive. Cannot be crossed with heirloom or other brown strains.

Millet

Pure mushroom culture on small-grain millet. More inoculation points for thorough, even colonization through the compost.

Traditional Choice

Exxpress

Full-synthetic, grain-free substrate. Runs faster than millet. Proprietary formulation protects against green mold. Ideal for operations looking to reduce grain dependency.

High-Performance

Onyxx

The speed of synthetic spawn with the energy profile of grain. Faster than millet with protection against Trichoderma green mold.

High-Performance

PAC Casing Spawn

Consistent performance under variable conditions. Combines high-quality compost and nutrients to promote even pinning across soil moisture ranges. For all Amycel strains.

For All Strains

Brown Mushroom Strains

Heirloom

Brawn

Kodiak

Spawn Carriers

Millet

Exxpress

Onyxx

PAC Casing Spawn

Guidance for Growers, From Growers