Free treasure: Michigan's foraging and collecting rules, explained

The rules here are old and stable — the calendar is what moves. Morels in May, berries in July, beach stones all summer, fuelwood in fall.

The short version

Michigan is unusually generous about letting you keep what you find. On millions of acres of state land and hundreds of miles of public beach, you may legally gather wild edibles — mushrooms, berries, fruits, and nuts, for personal use, free, no permit. You may take rocks, minerals, and fossils, up to 25 pounds per person per year, Petoskey stones included. Beach glass isn’t a natural resource — it’s simply yours. Shed antlers are the wildlife guide’s one found treasure. And dead-and-down firewood comes home with an inexpensive permit. The rules fit on a porch sign:

1. Take the fruit, leave the plant. If harvesting it kills or damages the living thing, it’s not allowed on public land.
2. Personal use only. Nothing foraged from public land may be sold. Ever.
3. Weigh your bucket. 25 pounds of rock per person per year from state land and Great Lakes shorelines.
4. Never pocket history. Arrowheads, shipwreck pieces, old artifacts — on public land they belong to everyone. Taking them is a crime, not a souvenir.

The legend of the 93-pound Petoskey stone

Every Michigan collecting conversation arrives here eventually. In September 2015, a Copemish man wading in Lake Michigan near Northport found the Petoskey stone of a lifetime — 93 pounds of fossilized coral. He wrestled it ashore and took it home. That December, the DNR came and took it back. The law caps rock collecting from state land and Great Lakes bottomlands at 25 pounds per person per year, and a single 93-pound boulder is… not that. He wasn’t fined — he genuinely didn’t know. The great stone ended up on public display at the DNR’s Outdoor Adventure Center in Detroit, where it serves as the state’s most charming cautionary tale. The lesson stands: the magnificent ones stay for the next person to gasp at.

What you may gather (and what stays)

Legal on state land, personal use: mushrooms (see the morel page), berries of every Michigan kind — thimbleberries included — wild tree fruits, and nuts. Not allowed: ramps and fiddleheads (digging or cutting takes the whole plant), maple sap (tapping wounds the tree — a private-land tradition only), whole plants and roots, live trees, boughs, and birch bark. Rarity protections trump everything. One plant has its own police (ginseng). And the eternal rule no statute can write: never eat anything you haven’t identified with certainty. The full table is on the edibles page.

Rocks and beach treasure

The 25-pound rule covers state land and the Great Lakes shore below the ordinary high-water mark. The wet beach is public-trust territory even in front of private cottages — the same walking zone the Michigan Supreme Court confirmed in Glass v. Goeckel. What Michigan hunts — Petoskeys, Charlevoix stones, glowing Yooperlites, Keweenaw agates and copper, Leland Blue, Rockport fossils — fills the beach treasure page. The hard boundary: no collecting at all at the federal units. Sleeping Bear, Pictured Rocks, and Isle Royale have rules of their own.

Treasure with paperwork

Metal detecting is welcome in state parks’ designated areas — show your finds to staff. Recreational gold panning is real, modest, and regulated. And the hard line never moves: artifacts and shipwreck material are off-limits everywhere on public land. The Great Lakes bottomlands are Michigan’s public museum — divable and untouchable.

Selling what you find

From public land: never. Personal use is the entire deal. From private land, wild mushrooms may be sold to restaurants and stores only after inspection by a certified mushroom identification expert — the Michigan Food Code requires it, and MDARD re-issues the reminder every spring. Berries and syrup from your own land flow into Michigan’s cottage-food rules; MDARD’s pages cover that path.

The signpost

Foraging rules and the morel burn-area map at Michigan.gov/Foraging; mushroom-sale rules at MDARD; state-land rules and fuelwood permits at the DNR; metal-detecting maps on each park’s page; archaeological finds to the State Archaeologist at the Michigan History Center.