Biodegradable Urns: What They Are and How They Work
Biodegradable Urns: What They Are and How They Work
Biodegradable urns — also called bio urns or eco urns — offer a meaningful, environmentally responsible way to farewell a loved one, returning their ashes to the earth or ocean without leaving harmful residues.
What Is a Biodegradable Urn?
A biodegradable urn is a cremation urn made from natural, compostable, or water-soluble materials that break down naturally in soil or water over time. Common materials include:
- Salt — Dissolves rapidly in water, ideal for ocean scattering ceremonies
- Recycled paper or cardboard — Breaks down in soil or water over weeks to months
- Natural fibres — Woven from bamboo, jute, or cotton
- Compressed peat or wood pulp — Designed for ground burial, breaking down over months to years
How Are Biodegradable Urns Used?
Ocean and Water Burial
Water-soluble biodegradable urns — particularly salt urns — are placed on the surface of the ocean where they float briefly before dissolving and releasing the ashes. In Australia, ocean scattering is legal without a permit, provided the urn is biodegradable and scattering occurs at least 500 metres from shore.
Ground Burial
Biodegradable urns designed for ground burial can be interred in a cemetery, memorial garden, or on private property (subject to local council regulations). Over time, the urn breaks down in the soil, allowing the ashes to become part of the earth.
Tree Planting
Some biodegradable urns are designed to be buried with a tree seedling, allowing the ashes to nourish the growing tree — a living memorial that grows and flourishes as a lasting tribute.
Biodegradable Urns vs. Traditional Urns
- Choose a biodegradable urn if: you plan to scatter ashes at sea, bury the urn in a garden or cemetery, or want an eco-friendly farewell.
- Choose a traditional urn if: you want to keep the ashes at home for long-term display. Browse our adult cremation urns and wooden urns.
Caring for a Biodegradable Urn Before Use
Keep in a cool, dry place away from moisture until you are ready to use. Do not store in humid environments, as moisture can begin the degradation process prematurely.
Frequently Asked Questions
How long does a biodegradable urn take to dissolve in water?
Salt urns typically dissolve within minutes to hours in seawater. Paper and fibre urns may take longer depending on size and water conditions.
Can I use a biodegradable urn for a pet?
Yes. Biodegradable urns are available in sizes suitable for pets. The same ocean scattering and ground burial guidelines apply.
Are biodegradable urns suitable for home display?
No. Biodegradable urns are designed for single-use burial or scattering and are not suitable for long-term home display.
Is it legal to bury a biodegradable urn in my garden in Australia?
Regulations vary by state and local council. In most cases, burying ashes on private property is permitted, but always check with your local council before proceeding.