Sterile grain spawn, mycology supplies, and propagated nursery stock — grown and made in Oregon. Premium quality at grower-friendly prices, with free delivery on every order.
Mycology Supplies
Sterilized fortified whole grains for gourmet and medicinal mushroom cultivation. Premium quality at the best price in the Pacific Northwest — up to 30% less per bag than the national brands.
3.5 qt sterilized fortified whole grains with 0.5 micron filter patch and self-healing injection port. Ready for inoculation via syringe, grain-to-grain, or agar. Made fresh in Oregon.
Box of 3 bags of sterilized fortified whole grains. Each bag includes filter patch and injection port. Save $20 versus buying singles.
Box of 6 bags of sterilized fortified whole grains. 21 quarts total. Our best value — less than half the price of competing brands per quart.
Nursery Stock
Expanding into Pacific Northwest native species and perennial starts, grown alongside our mycology operation.
Oregon grape, red flowering currant, salal, sword fern, and other natives propagated from local stock. Ideal for restoration and landscaping projects.
Coming Summer 2026Lavender, rosemary, thyme, and other perennial herbs. Propagated from cuttings and division, hardened for Pacific Northwest conditions.
Coming Summer 2026Locally grown oyster, shiitake, and lion's mane. Available seasonally with delivery in the Portland Metro Area and throughout the Pacific Northwest.
SeasonalSeaSpores started with a simple idea: the Pacific Northwest is mushroom country, so why are growers here buying spawn from the other side of the country? We make premium sterile grain spawn right here in Oregon — fresher, faster to your door, and priced for growers, not collectors.
We're now expanding into nursery stock propagation, growing native PNW species and perennial starts alongside our mycology operation. Whether you're cultivating gourmet mushrooms or restoring a native plant garden, SeaSpores is your backyard growing partner.
Bulk orders, wholesale pricing, or just want to talk mushrooms and plants — reach out anytime. Free local delivery in the Pacific Northwest and California, plus free shipping on all online orders nationwide.
Coming Soon
Our online store is being rebuilt with an expanded product line. Mycology supplies and nursery stock will be available for order soon. Email us for current availability.
Get in Touch
Bulk orders, wholesale inquiries, or just want to talk mushrooms and plants.
sales@seaspores.orgMilwaukie, Oregon — Serving the Pacific Northwest & California
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