Growing and selling fresh mushrooms needs the ordinary business layers, a registered name, sales tax where your state taxes produce, market permits, and then one federal rule: FDA's Produce Safety Rule, 21 CFR part 112, which counts mushrooms as produce. A farm that sells $25,000 or less of produce a year, on average and adjusted for inflation, isn't covered at all. A farm that sells under $500,000 of food a year, with more than half going to qualified end-users, consumers, and restaurants and stores in the same state or within 275 miles, has a qualified exemption: instead of the full rule, it keeps the records that show it qualifies and puts the farm's name and full address on the label, or at the point of sale. Selling dried or processed mushrooms is food processing, with a food license or cottage food rules, and foraged wild mushrooms have their own rules where they're allowed at all. In the example below, an Asheville mushroom farm sorts its licenses. Below are the layers, the Produce Safety Rule, the example, and a free checklist.
The short version
- Business layers: a business name, sales tax where produce is taxed, market permits.
- FDA's Produce Safety Rule counts mushrooms as produce.
- Not covered: farms averaging $25,000 or less a year of produce sales, adjusted for inflation.
- Qualified exemption: under $500,000 of food sales, more than half to consumers and nearby restaurants and stores.
- With the exemption: records that show it, and the farm's name and full address on the label or at the sale.
- Dried or processed mushrooms: a food license or cottage food rules.
- Wild mushrooms: often a certified identifier, or not allowed.
- TaroStack keeps each harvest's lot and date, and where every box went. More below.
The Produce Safety Rule
| Rule | What 21 CFR part 112 says |
|---|---|
| Mushrooms | Produce, including the fleshy fruiting body of a fungus, such as white button or shiitake (112.3) |
| Not covered | A farm averaging $25,000 or less a year of produce sales over the last 3 years, adjusted for inflation (112.4) |
| Qualified exemption | Under $500,000 of food sales a year, and more than half of it sold to qualified end-users (112.5) |
| Qualified end-users | Consumers, and restaurants or retail food establishments in the same state or within 275 miles (112.3) |
| With the exemption | General provisions, records, and the farm's name and complete business address on the label, or at the point of purchase, or in an online notice (112.6) |
| Otherwise | The full rule: worker training, water, soil amendments, sanitation, records |
The rule is 21 CFR part 112; the exemption and its address requirement are in 112.5 and 112.6. How FDA's food rules fit together is in what is FSMA. This is general information, not legal advice.
Processed and wild mushrooms
Fresh, cultivated mushrooms are farm produce. Dried mushrooms, mushroom jerky or a sauce are processed foods, made under a food license or, where your state allows them, cottage food rules. Wild, foraged mushrooms are a separate question: some states and cities require a certified mushroom identifier, and some cottage food laws ban them. Grow kits sell a block of substrate, not food. How to pack the fresh ones is in how to package mushrooms for sale.
An example: an Asheville mushroom farm
Hilltop Greens, the made-up microgreens and mushroom farm in Asheville, North Carolina, I use in these examples, grows oyster and lion's mane mushrooms and sells them at two markets and to restaurants in town, with grow kits online:
| Layer | Status |
|---|---|
| Business name, an LLC | Done, January 2025 |
| Sales tax | To check: whether North Carolina taxes fresh produce and grow kits |
| Produce Safety Rule | Covered: produce sales are above $25,000 |
| Qualified exemption | Yes: all sales under $500,000, nearly all to market customers and local restaurants; checked each January |
| Farm name and address | On the box labels and the market sign |
| Market permits | Done, March 2026 |
| Country of origin for a grocer | To check if a grocer orders |
| Dried mushrooms | Not yet: needs a food license first |
| Product liability insurance | Done February 1, 2026; renews February 1, 2027 |
The qualified exemption is checked every January from the last three years' sales, because a grocer account that grew past the restaurants could tip the farm into the full rule. What the farm earns is in mushroom farm business plan.
Get the checklist
Download the mushroom business license checklist. One sheet: each layer, who issues it, what it is, whether you need it, the cost, the date done and the renewal date; the status and the total cost fill in. It's an ordinary Excel file with no macros, and it works in Google Sheets, LibreOffice and Numbers.
Where this stops working
The qualified exemption depends on three years of sales by kind of buyer, and every harvest has to trace to the restaurants that got it. A checklist doesn't add up who bought what.
How TaroStack does it
TaroStack keeps each harvest's lot and date, and where every box went.
Each harvest a lot. A harvest is a batch with a lot and its harvest and best-before dates, and lot labels print for the boxes.
Sales by customer. Orders are kept by customer, so the year's sales to restaurants, stores and market customers are in your records when you check the exemption.
Where it went. Each restaurant's order records the lots it got, so one recall report shows every customer a harvest reached.
| The job | Notebook | In TaroStack |
|---|---|---|
| A harvest's date on the box | Written by hand | From the harvest's lot |
| Sales by kind of buyer | Added up from receipts | Orders by customer |
| Which restaurants got a harvest | Invoices | One recall report |
Lots, batches and orders are on every plan, from $49 a month. The first 30 days are free, with no credit card. If you'd like a hand setting up, ask, and we'll do it with you.