Biodegradable Urns for Ashes

What Are Biodegradable Urns?

Biodegradable urns are cremation urns made from natural materials designed to break down over time when placed in water, soil, or carried on the wind during a scattering ceremony. They are the most common choice for families planning a water burial, green burial, or ash scattering, and they eliminate the need for a permanent urn once a final resting place has been chosen. At Memorials.com, our biodegradable cremation urns come in three sizes — keepsake, standard adult, and large — to accommodate any amount of remains. If you need guidance on which size fits your situation, our urn sizing guide walks through the math. Families who plan to keep a small portion of ashes at home alongside the biodegradable urn often pair it with keepsake urns for that purpose.

Biodegradable Urns for Water Burial

Our biodegradable urns for water burial are specifically engineered to float briefly before descending gently beneath the surface, giving families a meaningful moment of ceremony at the water's edge. Once submerged, water burial urns dissolve completely — leaving no residue and no environmental impact. We carry water-soluble urns in a range of forms and materials:

Salt urns are crafted from compressed natural salt and dissolve cleanly in both saltwater and freshwater. They typically sink within a few minutes of placement, making them ideal for ocean, lake, or river burial.

Sand and gelatin urns are shaped like traditional vase-style urns and float for a brief period before descending. The natural construction materials leave nothing behind in the water.

Shell-form and sculpted urns are shaped into natural forms — seashells, spirals, and organic shapes — and are designed for placement directly on the surface of the water. They are among our most popular biodegradable urns for water burial and for burial at sea.

If you are planning a burial at sea or a water scattering ceremony, our guide to scattering ashes covers legal requirements, distance-from-shore rules, and ceremony etiquette. A biodegradable urn for burial at sea must meet EPA guidelines for placement at least three nautical miles offshore — our product descriptions indicate which urns are EPA compliant.

Biodegradable Urns for Ground Burial

Ground burial biodegradable urns are made to hold ashes during interment and return to the earth over months or years, depending on the material and soil conditions. They are an alternative to traditional urn vaults for families pursuing a green or natural burial, or for any family that does not require a permanent vessel below ground. Common material options include:

Natural gourd and wood urns are handcrafted from organic materials that decompose naturally in soil. Their warm, earthy appearance suits families looking for a traditional urn form in a biodegradable construction.

Paper and recycled fiber urns are among the most affordable biodegradable cremation urns for burial. They are lightweight, and many can double as scattering urns with a removable top panel.

Clay and ceramic-style biodegradable urns offer a more formal appearance than paper or fiber urns. Unfired or low-fire clay returns to the earth more readily than kiln-fired ceramic.

If your cemetery requires a burial vault to protect the urn container, note that most biodegradable urns are not compatible with this requirement. Review our guide to cremation urns for burial and check with your cemetery before purchasing. For traditional in-ground burials that do require a vault, our urn vaults are designed for that purpose.

Eco-Friendly Urn Materials at a Glance

All of our eco friendly urns use natural, non-toxic materials. Here is a quick overview of what to expect from each type:

Salt — Dissolves in fresh and saltwater; also biodegrades in soil over time. Very clean dissolution, no surface residue. Best for water ceremonies.

Paper and recycled fiber — Fastest breakdown in soil; lightweight and easy to carry. Many styles available for scattering and ground burial. Most affordable option for biodegradable urns for human ashes.

Natural gourd and wood — Slower decomposition than paper; warmer, more traditional appearance. Better suited to ground burial than water ceremony.

Sand and gelatin composites — Engineered specifically for water use. Float briefly before sinking. Not recommended for ground burial.

Clay (unfired) — Mid-range decomposition rate in soil. Available in painted and unpainted finishes. Some styles are suitable for both water and ground use — check individual product descriptions.

Our full biodegradable cremation urns guide covers material breakdown timelines, ceremony planning, legal requirements by state, and questions to ask before you buy.

How to Choose a Biodegradable Urn

Choosing the right biodegradable urn for ashes comes down to four factors:

Intended use — water or ground. Water burial urns and ground burial urns use different materials and construction. A salt or gelatin urn designed to dissolve in water may not be the best fit for a land interment, and a gourd or paper urn may not dissolve cleanly at sea. Start by confirming your family's plans before selecting a material.

Size. Standard adult urns hold up to 200 cubic inches of remains (appropriate for most adults). If you are dividing remains among family members, a keepsake urn holds a smaller token portion. Our urn sizing guide has the complete capacity chart — note this link was already used above, so we reference the guide by name here without re-linking.

Ceremony timing. If the ceremony will happen immediately after the urn is purchased, any style works. If the urn needs to sit in the home for weeks or months before the ceremony, choose an urn with a secure closure and a material that will not degrade under indoor conditions — salt urns and natural fiber urns are stable until exposed to moisture.

Budget. Biodegradable urns are generally among the most affordable cremation urns we carry, starting well under $100 for most styles. Our cremation urn cost guide covers full pricing across all types. If budget is the primary concern, discount urns include several biodegradable options at the lowest price points.

Free Shipping on All Biodegradable Urns

Every biodegradable urn for human ashes at Memorials.com ships free, with no minimum order. If you need expedited delivery, 2-day air and overnight options are available at checkout. All orders come with our lowest price guarantee — if you find the same urn for less anywhere online, we will match the price. Our customer care team is available seven days a week if you have questions about materials, sizing, or ceremony planning before you order.