Human ashes are transformed into plant food for trees by plant pathologists

Human ashes are transformed into plant food for trees by plant pathologists

Dr Mary Cole
Dr Mary Cole used the ashes of a late friend to find out if the process was possibleGreater Melbourne Cemeteries Trust

The latest advances in recycling developed by Australian plant pathologists have made possible a way for remains of the dead to provide nourishing sustenance for trees and other plant life. One of the stumbling blocks to the process was finding a method to reduce the salt levels and high amounts of alkaline in human ashes, which are similar to caustic soda, killing plant life.

Scientists also had to work out a way round human ashes solidifying when mixed with water. “I would like to think that a person who lived for, say, 70 years and contributed to life on Earth becomes now a tree that might live for hundreds of years. So their spirit lives on in a tree,” said Mary Cole, a Melbourne plant pathologist.

She said her research was “incredibly emotional”, as she used the ashes of a late friend to find out if the process was possible.

Dr Cole carried out experiments initially on the ashes of animals, and then later on human beings. Her team eventually found a way to convert human ashes into plant food. The technique is under wraps at present, although they are applying for a patent.

The best trees to flourish when fed on a diet of human ashes were silver birches. In total, 16 tree species including Australian and European varieties were used in the experiments. Friends and relatives of people who die in Melbourne will be the first to be offered a tree fed by a loved one’s remains.

Cole was approached by the founder of the memorial tree company Warren Roberts, who was coming to terms with the death of a close friend 10 years ago.

“It only takes about a 100 trees to offset all the breaths a human takes in their lifetime and we give back 200, and those trees are connected to that person’s legacy,” he told ABC.

Living Legacy Forest Products

Living Legacy Forest offers the ability to commemorate through nature with trees.

Holistic Legacy

Living Legacy Tree

“Infuse your ashes into a tree”

Our patented technology combines natural processes to extract the beneficial minerals of cremated remains to support tree growth and honour the circle of life.

Learn More
Collective Legacy

Collective Legacy Forest

“200 tree memorial without infusion”

Choose to plant trees in memory of your loved ones. 200 trees planted locally and abroad, replaces the air a person breathes out across a lifetime, your forest footprint leaves a lasting, sustainable gift in return to the planet.

Learn More
Remembrance Gift Card

Legacy Giftcard

“A gift of trees in memory of your loved one”

Friends and family can create an enduring and meaningful commemoration by gifting 20 trees that is enduring and more meaningful than just flowers.

Learn More

In the Media

abc banksia-copy dailytmail-australia2 hearaldsun-copy intl-businesstimes2 leader-news2 pallativecare2 theproject-copy the-times-copyyerra

Register for more information

“It gave us absolute peace”

-Dianne Rich

“All of our daughters were able to plant their own Legacy Trees in their own place to continue the presence of their late mother who was a passionate gardener”

-Andrew Troedel

“If I was going to be cremated, I would choose to be a lemon scented gum.”

Jacqui Weatherill, CEO Greater Metropolitan Cemeteries Trust

“My 15 year old god daughters planted the tree on Father’s day, a month after he passed away, and found  so much peace in the experience. 

Mishka King on behalf of the late William Francis Huff

“Some say: for the greater good of mankind, that’s not us, that’s generations to come”

Rob Gell, Environment advocate

“There is a very important connection between plants and people, if you’re planting a tree, it’s for the next generation, your not just planting it for yourself”

Tim Entwisle, Director Royal Melbourne Botanic Gardens