What to Do With Cremated Ashes: Every Real Option

Cremation now outnumbers burial in the United States. The National Funeral Directors Association projected a 63.4 percent cremation rate for 2025 and expects it to reach 82.3 percent by 2045.^[1] That means millions of families every year end up holding a plastic bag of gray ash inside a cardboard box, wondering what they’re supposed to do with it.

First, know what you’re holding. Cremated remains aren’t soft fireplace ash. They’re bone, dried and ground to coarse sand, white to pale gray, and dense enough to surprise anyone lifting the box for the first time. An adult's remains usually fill a container about the size of a shoebox.

Here’s the answer nobody says plainly: you don’t have to do anything with them. There's no deadline. No law requires you to bury, scatter, or otherwise resolve cremated ashes on any schedule. Families keep urns on shelves for years, sometimes for the rest of their own lives, and that’s normal. If someone died last week and the box just came home, you don’t have to decide anything today.

What follows is every real option, each with its practical and legal notes. None of them is ranked, because there’s no best option. If the cremation itself hasn’t happened yet, read what happens during cremation and what it costs first.

The simplest option. The crematory returns ashes in a temporary container, usually a sealed plastic bag inside a cardboard or plastic box. You can leave them in that box forever or transfer them to an urn in ceramic, wood, metal, stone, or cloth. You don’t have to buy the urn from the funeral home; the Funeral Rule protects your right to shop anywhere.

Keeping ashes at home is legal. No federal law regulates where an urn sits, and state cremation laws govern crematories and disposition paperwork, not your bookshelf. There’s no inspection, no registration, no renewal.

Dividing ashes among family is legal too. Nothing requires ashes to stay in one container. The funeral home or crematory will split them into multiple containers if you ask before pickup, or you can divide them yourself at home. Keepsake urns, small vessels that hold a few tablespoons, exist for exactly this. If relatives disagree about who keeps them, the person with the legal right of disposition decides. That’s usually the next of kin or whoever the person who died named in a funeral directive.

Two practical notes. Label the container with the person's full name and dates, because ten years from now an unlabeled box is a mystery. And write down who inherits the urn. Ashes pass through generations, and heirs regularly receive urns of people they never met, with no instructions attached.

Burial of ashes takes four main forms:

• A cemetery urn plot. Smaller and cheaper than a casket plot. Many cemeteries also allow an urn to be buried on top of an existing family grave for a fee. The cemetery sets its own rules, so ask.
• A columbarium niche. A small compartment in a wall of them, usually at a cemetery or church. The urn sits behind a sealed front panel, often with an inscription.
• A green burial ground. Some accept ashes and some don’t, partly because of the soil chemistry covered below. Green burial grounds that take ashes will tell you their conditions.
• Your own land. Burying an urn on property you own is broadly allowed, but state and local rules vary, and an unrecorded burial can complicate a future sale of the land. Check the burial rules in your state's MORTL guide before you dig.

Two more forms exist inside cemeteries: scattering gardens, dedicated beds where the cemetery permits scattering, and communal ossuaries, shared vaults for commingled ashes. Both come with a permanent recorded location, which burial on your own land doesn’t.

Can you scatter ashes anywhere? No. The working principle: whoever controls the land or the water controls the scattering.

• Your own private land: allowed, no permission needed.
• Someone else's private land: allowed with the owner's permission. Get it in writing.
• Public land: city parks, state parks, and beaches each answer to their own agency, and policies run from unrestricted to prohibited. Call the office that manages the land before you go.
• National parks: federal regulation 36 CFR 2.62(b) prohibits scattering except under a permit or in areas a park superintendent designates.^[2] In practice, most parks say yes with a free permit. Yellowstone issues a no-fee special use permit; apply at least 10 business days ahead, scatter only in undeveloped non-thermal areas, disperse the ashes completely, and leave no marker or memorial behind.^[3] Great Smoky Mountains issues a free letter of permission and asks that you stay away from high-use areas and keep the gathering small.^[4] Every park writes its own conditions, so check the specific park's website.
• At sea: the EPA's general permit under the Marine Protection, Research and Sanctuaries Act covers scattering from a boat. The requirements: at least 3 nautical miles from land, and a report filed with the EPA within 30 days through its online Burial at Sea Reporting Tool. Anything left at the site must decompose in seawater; plastic or metal flowers and wreaths are prohibited.^[5]
• Lakes and rivers: the 3-mile federal rule applies only to the ocean. Inland waters are regulated by the states, so check your state's rules before scattering in fresh water.^[5]

Practical notes no permit covers: check the wind, stand upwind, and pour low and slow from waist height. The ashes are heavier than most people expect and fall fast. Private venues, sports stadiums, and theme parks prohibit scattering, and doing it covertly is trespass.

A real industry incorporates ashes into objects. MORTL doesn’t endorse any of these companies or products. They’re named so you know the option exists:

• Jewelry. Pendants, rings, and bracelets built to hold a pinch of ash, or with ash sealed into resin or glass settings. Sold by dedicated cremation jewelers and by independent makers.
• Glass. Glass artists fuse a small amount of ash into blown-glass orbs, paperweights, and beads. The ash stays visible inside the finished piece.
• Vinyl records. The British company And Vinyly presses a portion of ash into a playable record carrying audio you choose: a voice, a song, a message.
• Memorial reefs. Companies such as Eternal Reefs mix ashes into concrete reef structures placed at permitted offshore reef sites, where fish and coral colonize them.

All of these use a small fraction of the ashes. You can make one object and still keep, bury, or scatter the rest.

Biodegradable tree urns are marketed hard, so here’s the chemistry, plainly. Cremated ashes alone don’t feed a tree. Laboratory analysis of cremated remains shows a pH of 11.8, far above the range where soil life operates, and sodium at 200 to 2,000 times the concentration that benefits plants.^[6] At that pH, the calcium and phosphorus in the ash stay chemically locked away from roots, and plants placed directly in concentrated ashes struggle or die.^[6]

That doesn’t make planting a bad option. It means the product has to solve the chemistry. Tree urns and burial soil blends that work mix the ashes with amendments that lower the pH and dilute the sodium before anything grows. If you want no product at all, plant the tree beside the ashes rather than in them, or scatter a thin layer over a wide area instead of concentrating everything in one hole.

Plain biodegradable urns without a seedling are a separate, honest product. They hold ashes for earth or water burial and break down. No growth claims required.

Mail: USPS only. The Postal Service is the only shipper that accepts cremated remains; FedEx and UPS don’t take them.^[7] Domestic shipments must travel Priority Mail Express, with the ashes sealed in a strong inner container and packed in a Priority Mail Express Cremated Remains Kit, which USPS supplies free through its online store. USPS Publication 139 gives the packing steps.^[7]

Planes: put them in your carry-on. TSA allows cremated remains through security in carry-on bags. Checked bags are allowed under TSA rules too, but some airlines refuse remains in checked luggage, so confirm with the airline first.^[8] The container decides whether you clear the checkpoint: TSA recommends wood or plastic because the X-ray must show what’s inside, and a container that scans opaque won’t be allowed through.

Officers won’t open the container to inspect it, even if you ask them to.^[8] Carry the death certificate and the certificate of cremation with you.

If you’re flying internationally, the destination country may require a death certificate, a certificate of cremation, and sometimes consulate paperwork before the ashes can enter. The airline and the destination country's consulate can tell you which rules apply. TSA Cares can arrange assistance at the checkpoint if you contact the program before your flight.

These options aren’t exclusive. Families bury a portion, scatter a portion at a place that mattered, and keep the rest. Some make one piece of jewelry and leave the urn sealed. Some do nothing for a decade and then, one spring, plant a tree. All of that’s normal.

There’s no deadline, no authority checking, and no correct answer. If the box sits in a closet while you grieve, nothing bad happens and nothing is owed. If the urn has become the hardest object in your house to look at, that’s grief, and it has its own guide. When you’re ready to gather people, with or without the ashes present, a celebration of life needs no urn to work.