Specialty Strain Mushroom Grain Spawn - Certified Organic (6 lbs)

Grain spawn may take 1-2 weeks to ship depending on availability 

Here we'll list limited quantities of specialty strains we produce from our extensive culture bank, giving you a chance to grow species that aren't typically available on our website. Updated whenever there is new spawn!

All strains come in 6 lb bags of grain.

USDA Certified Organic

Current Offerings:

Pleurotus ostreatus NSPO19: High-yielding, thick-stemmed "King Blue" from Mossy Creek.

Lentinula edodes NSLE15: A more recently-acquired shiitake strain that is more amenable to soy-supplemented substrates. We've noticed comparable yields to our other two commercial strains, but could benefit from more experimentation!

'Popham Oyster' Pleurotus ostreatus NSPO2: Our elm oyster strain; produces highly branched clusters of off-white/tan mushrooms that yield well in both cold and warm temperatures.

Grifola frondosa NSGF6: An alternative maitake strain from Belgium and an impressive contender for ease of cultivation for a notoriously difficult species. Fruiting bodies will develop fronds with proper oxygen levels and light.