Blue Oyster Mushroom Slant Culture

NSPO1 - Harbor Blue Oyster
$199.99
Species & Strain

Processing times

Slants are ideal for growers looking to make culture plates or for longer-term culture storage. Our slants are 1st generation, of the highest quality, and cryopreserved in vials to ensure optimal viability.

Blue Oyster slants are made to order and have a shelf life of approximately 12 months. They should be stored in the refrigerator or in a cool dry place, away from direct sunlight. Note that slants require basic lab skills. Handle using sterile technique to prevent contamination.

See full description of each blue oyster strain available below.


NSPO1 - Harbor Blue Oyster

Pleurotus ostreatus. This is a very productive commercial strain of blue oyster from Pennsylvania. It produces dense clusters with dark gray/blue caps. It produces best in cooler temperatures but also performs well during the warmer months. Averages 1-2 lbs first flush off of 5 lb supplemented sawdust blocks but will also produce off sterilized straw substrate.

NSPO4 - Steely Blue Oyster

Pleurotus ostreatus. A steely blue oyster strain we prefer for outdoor spawn for log inoculations. Fruits best in cooler temperatures, up to 65 degrees.

NSPO5 - NV Blue Oyster

Pleurotus ostreatus. A blue oyster strain from Nevada. Unknown fruiting conditions.

NSPO8 - Quito Blue Oyster

Pleurotus ostreatus. A blue oyster culture from mushrooms cultivated in Quito, Ecuador.

NSPO9 - High Yield Blue Oyster

Pleurotus ostreatus. A high-yielding blue oyster strain. Unknown source.

NSPO12 - Cap 'n Stem Blue Oyster

Pleurotus ostreatus. Developed by Erik Lomen at Cap N' Stem, a blue oyster strain featuring flushes of smaller caps.

NSPO15 - Shmoyster Blue Oyster

Pleurotus ostreatus. An alternative blue oyster strain. Darker and denser than our PO1 with a more impressive first flush but a lower tolerance for warm temperatures. A serious Oyster with a serious name.

NSPO16 - Big NV Blue Oyster

Pleurotus ostreatus. Big, beautiful blue oysters from Nevada with large fruiting bodies and a tolerance for higher CO2 levels. 

NSPO17 - FL Blue Oyster

Pleurotus ostreatus. A slightly more delicate, hot weather loving blue oyster with shades of beige to pale gray-blue.

NSPO18 - CA Blue Oyster

Pleurotus ostreatus. Another good alternative to our PO1. Fast-growing. A very popular commercial strain from California.

NSPO19 - King Blue Oyster

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

Frequently Asked Questions

We recommend absolute beginners start with our Spray & Grow Kits, which make growing mushrooms at home super easy.

We want you to have the best possible experience with every North Spore product and guarantee free replacements within 30 days of receipt for any damaged, contaminated, or unusable product.

Absolutely! Mushroom cultivation is a great activity to do with the whole family, whether you'd like to grow indoors or outdoors. If you're new to mushrooms, we recommend starting with a Spray & Grow Kit or a Plant & Grow Kit – both make it easy to grow fresh, organic mushrooms at home.

We are vertically integrated — from culture work all the way to spawn and substrate production — ensuring a quality end product. And our staff mycologists keep up to date on all best practices in our field. Additionally, we have a dedicated QAQC team that tests every batch of grain and substrate before it’s inoculated.

Cluster of brown-capped mushrooms with long, light-colored stems against a white background.

Your Trusted Source for Premium Mushroom Growing Supplies

Whether you’re growing mushrooms at home, in your garden, or at a commercial scale, we offer everything you need to cultivate success. We start with the highest-quality OMRI-listed ingredients, mix them in our state-of-the-art facility, and inoculate them in our custom-built lab, so you can rest easy knowing your product will yield the best results.

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