How to sell the mushrooms you grow: farmers markets, restaurants and the rules

In many states you can sell fresh, whole cultivated gourmet mushrooms you grow, such as oyster, shiitake and lion's mane, with little or no licensing at a small scale. Drying, slicing, health claims and larger sales bring more rules. Farmers markets add their own vendor rules, and restaurants want the same pounds every week. Start small, price from your own costs, and keep a record of where every block came from.

This guide covers cultivated mushrooms only. Wild-foraged mushrooms face a separate, stricter regime: in New York, for example, they must be "picked by an approved expert" (Cornell). Rules vary by state, county and market, so check with your state department of agriculture and local health department. This isn't legal advice.

Our sources include the FDA, Cornell Small Farms, state agriculture guidance from Washington, Michigan and California, University of Illinois and University of Kentucky Extension, USDA NASS, SARE, Fungi Perfecti and GroCycle, checked 28 October 2026.

Can you sell mushrooms you grow at home?

Yes: in many states you can sell fresh, whole mushrooms you grow, much like any other produce. Cornell says that selling mushrooms "you grow in a designated space as a fresh produce item means you can sell with little or no regulation", at least at a smaller scale, with more rules as you grow (Cornell).

The line that matters is processing. A harvest cut and a stem trim count as harvesting (FDA). In New York, "any cutting, slicing, or modification" beyond harvesting is processing (Cornell).

Do you need a license to sell mushrooms?

Whether you need a license to sell mushrooms depends on your state and product: fresh, whole cultivated mushrooms often need none, while dried, sliced and powdered products often do. These four states are examples, not a full list:

State (source date)	Fresh, whole mushrooms	Dried, sliced or powdered
Washington (2019)	"no special inspection or license" beyond FSMA	Food Processor License, unless whole and only air-dried "without any mechanical fans or heat"
New York (2026)	No permit, "just as with any other type of produce"	Dehydrator-dried: commercial space or a licensed commercial kitchen, plus a state license
Michigan (2024)	No license for whole, uncut	Whole dried: the grower can wholesale unlicensed. Cut or ground: a license, unless made under cottage food rules for direct sale
California (2021)	A Certified Producer Certificate to sell in a certified farmers market	Processed products can't be sold as certified

Sources: Washington (WSDA), New York (Cornell), Michigan (MDARD slides), California (CDFA, San Mateo County).

Two more lines to watch. A label that suggests a product "will help or improve health" makes it a dietary supplement under FDA rules (Cornell), so make no health claims. And Washington lets growers without a processing license use a licensed facility, which it calls "co-packing" (WSDA). Business registration, zoning and sales tax are separate questions for your city, county and state.

Does the FDA Produce Safety Rule apply to small growers?

The FDA Produce Safety Rule covers mushrooms, but a farm with small produce sales isn't covered by it. Mushrooms aren't on FDA's list of produce "rarely consumed raw", so they count as covered produce (FDA).

• Not covered: a farm whose produce sales averaged less than $25,000 a year in 2011 dollars over the previous three years. In FDA's current table, that's $34,324 for 2023–2025 (FDA). You're still responsible for a safe product (UMaine).
• Qualified exemption: a farm whose total food sales averaged under $686,476 for 2023–2025, over half to "qualified end-users": consumers, or restaurants and stores in your state or within 275 miles (FDA, FDA). You must show the farm's name and complete business address on the label or at the point of purchase, and keep records, including a written annual check that you still qualify (FDA).

FDA updates these figures each year, so check the table before you rely on one.

What do farmers markets ask mushroom vendors for?

Farmers markets often ask you to prove you grew what you sell, and many want insurance. Cornell's 2021 survey of 139 specialty growers found farmers markets were the biggest single channel, 38% of their mushroom sales (Cornell). Expect some of these:

• Proof you grew them. Many markets are producer-only; Fairfax County's market vendors must "grow, raise, or make from scratch" what they sell (Fairfax County). In Illinois you may be asked to prove mushrooms are cultivated, with "receipts/proof of transaction/receival of spawn from a commercial source" (Illinois Extension). Keep your spawn and block receipts.
• Insurance. The Maine Federation of Farmers' Markets says "each vendor in a farmers' market should carry insurance" (MFFM). Fairfax County's markets require $1,000,000 of liability coverage per occurrence (Fairfax County).
• A certified scale, or not. In New York, selling loose mushrooms by weight needs a certified scale; check your state. For loose sales, Cornell's fix is the pint, "which is about 1/4lb", though not for packaged goods (Cornell).
• Health department rules. Local health departments "may regulate fresh specialty mushrooms" at Illinois markets (Illinois Extension).

Ask the market manager for the vendor handbook before you apply.

How do you sell mushrooms to restaurants?

To sell mushrooms to restaurants, bring a chef same-day samples, then deliver the same quality on the same day every week. GroCycle says restaurants "want consistent deliveries of quality fresh produce more than anything else". It advises asking for "a regular weekly order with a minimum quantity that you're confident you can deliver", delivering mushrooms "never more than two days old", and expecting that some restaurants "may only pay you one to two months after delivery" (GroCycle).

Restaurants buying local produce "may pay modest premiums above wholesale prices, typically ranging from 5% to 25%" (University of Kentucky), and they generally prefer 5- to 7-pound boxes (University of Kentucky). One log-grown shiitake grower approached 15 restaurants and kept 12; price was "the main factor" for the other three (Cornell).

A weekly order means steady weekly starts. Our grow timeline shows how to plan a steady weekly harvest. One GroCycle grower suggests new growers start with farmers markets and shops, which are "more forgiving while you learn consistency" (GroCycle). Some larger grocery chains may require GAP (Good Agricultural Practices) certification (Cornell).

How much can you sell mushrooms for?

Specialty growers in Cornell's survey averaged $15.99 a pound selling direct to consumers and $11.62 wholesale, in 2020 prices (Cornell). These figures measure different things, so compare like with like:

Sources: Cornell, USDA NASS. GroCycle, a vendor, puts US fresh oyster at $8 to $17 a pound, citing no data (GroCycle).

Price from your own numbers, not the table. Cornell warns against just copying what's "in the market" when your price has to cover production, marketing, owner labor and management (Cornell). Our cost per pound guide works out yours.

How you show the price matters too. One log-grown shiitake farm's $16-a-pound sign sold slowly; quarter-pound pint baskets at $4 sold "Much better!" (Cornell).

Which mushrooms do small farms grow, and how do you keep them fresh?

Shiitake, oyster and lion's mane are the mushrooms small farms grow most. Shiitake was grown by 79.7% of Cornell's survey growers, and oyster and lion's mane were "also very popular" (Cornell). Lion's mane and rarer species "may be more difficult to market" than shiitake and oyster, and may need education (University of Kentucky).

Shelf life decides how far a species can travel. Refrigerated, log-grown shiitake keeps 12 to 14 days and oyster five to seven (University of Kentucky); lion's mane "bruises very easily" (University of Kentucky). To keep them:

• Pick on time. An overripe mushroom "may only last a few days in the fridge", while one picked at the right time "can last a week or more" (Cornell). Our stages guide shows when mushrooms are ready.
• Keep them cold. Cornell says to store them at 36–38°F in bins with loose lids, never sealed (Cornell).
• Let them breathe. Use vented cardboard boxes or paper bags (University of Kentucky).

Can you make money selling mushrooms?

You can make some money selling mushrooms, but no source promises a figure. A 1998 Fungi Perfecti letter says growing gourmet mushrooms "can be marginally to highly profitable" but "it is impossible to generalize" (Fungi Perfecti). In Cornell's survey, 64% of growers reported more demand than they could supply (Cornell).

A cheap test is to fruit bought blocks and sell the harvest. In a SARE-funded trial, three Northeast farms with existing markets did that outdoors, selling 30–120 pounds a round at $9–$20 a pound for $150–1,500 profit a round (SARE). Those farms already had buyers; yours may not. A blue oyster fruiting block is one we've grown (North Spore — affiliate link: we may earn a commission at no extra cost to you).

Count your own labor too: on five SARE farms, labor averaged 67% of operating cost, and 42% on farms that bought blocks (SARE).

How do you keep your grow records in Hypha?

You keep the grow records behind your sales in Hypha, our grow tracking app, by starting each block from Inventory and logging every harvest by weight.

• Where it came from. Add a bought block or spawn bag in Inventory as Prepped stock, with the Vendor; later, edit it to add the order number in Notes. Start the block from it with Start grow, and the block keeps its source. Keep the receipt itself too.
• What it gave. Tap Harvest Flush and enter the Fresh Weight, and Dry Weight if you dry. Each strain's Performance shows its median harvest per finished bulk block: check it before you promise a chef a weekly amount.
• Next flush. Each logged flush sets a default next-flush reminder 10 days out, on the block's timeline and in the Schedule tab. Add your own repeating "Market prep" task beside it.
• Which bag is which. Label & QR prints a shelf label with the strain, culture code and start date. It's not a retail label.

On Pro and Farm, blocks started from costed stock show cost per fresh pound, counting stock and prep only, not labor or packaging (how it works, pricing). Farm adds teammates, so whoever runs the stall sees the same blocks. Export my data downloads your records as CSV files on any plan.

Hypha doesn't take orders, track customers or sales, or store invoices, so keep those in your bookkeeping. Download Hypha; the free plan holds 25 active blocks.

FAQ

Can I sell dried mushrooms I grow?

Often, but dried mushrooms usually bring more rules than fresh ones, and states differ. Washington and New York want a license for mechanically dried mushrooms, while Michigan lets growers wholesale whole dried mushrooms without one (see the license table).

Do I need a certified scale to sell mushrooms?

In New York, selling loose mushrooms by weight needs a certified scale; check your state. Selling by the pint avoids it, but that won't work for packaged mushrooms (Cornell).