What are Biodegradable Urns made of?
Quick answer: Biodegradable urns are made from natural materials that break down safely in soil or water. The most common are plant fibers and recycled paper, compressed bamboo, rock salt, sand, and hemp. Water urns are usually built from salt, sand, or paper so they float briefly then dissolve, while land-burial urns use bamboo, paper, or plant fiber that returns to the earth over months.
A biodegradable urn is designed to disappear. Rather than keeping ashes contained indefinitely, it holds them just long enough for a burial or water ceremony, then breaks down and returns to nature. The material decides how it behaves, so it helps to know what each one is and what it is best for.
Plant fiber and recycled paper
Many land-burial urns are made from compressed plant fibers or recycled paper pulp. They are sturdy enough to handle and bury, then break down in soil over a few months. The Embrace urn in white hemp is a good example, a clean, natural form that suits a garden or natural burial ground.
Bamboo
Bamboo is one of the fastest-growing and most renewable plants on earth, which makes it a fitting material for a memorial. The Tribute Bamboo urn and the woven Bali urn are both made from it. Bamboo urns are strong enough to keep on display for a while before burial, and biodegrade naturally once in the ground.
Rock salt
Rock salt is a striking choice for water ceremonies. The Himalayan Rock Salt water urn is carved from natural salt, so when placed on water it dissolves cleanly and completely, leaving nothing behind.
Sand and paper for water
Other water urns use bonded sand or moulded paper. The Oceane sand urn and the Journey water urn are made to float gracefully for a few moments when set on water, then sink and break down. That short float gives families a gentle pause before the urn is released.
How long do they take to break down?
It depends on the material and the setting. A salt or sand water urn can dissolve within hours of being placed in water. A paper or plant-fiber land urn typically breaks down over a few months in soil, while denser bamboo can take longer. Warmth and moisture speed the process up.
Frequently asked questions
What is a biodegradable urn made of?
Natural, compostable materials: most often plant fiber, recycled paper, bamboo, rock salt, sand, or hemp. The choice of material depends on whether the urn is meant for land burial or water release.
Are biodegradable urns safe for the environment?
Yes. They are made from non-toxic natural materials specifically so they return to soil or water without leaving harmful residue.
Can biodegradable urns be kept at home first?
Many can be kept on display for a time before burial or a water ceremony, especially the bamboo and fiber land urns. Salt and sand water urns are best stored somewhere dry until the day.
Do biodegradable urns hold a full adult's ashes?
Adult-size biodegradable urns hold a full adult's ashes, around 200 cubic inches. Smaller sizes are available for children, pets, or keepsake portions.
See the full range in our biodegradable urns collection, or read our guide on how long biodegradable urns last.
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