Residents of New South Wales, Australia could soon have the option to make a final contribution to their garden upon death, after the state’s parliament approved turning human remains into compost as an alternative to burial and cremation.

The bill, introduced by Independent Sydney MP Alex Greenwich, cleared the upper house on Wednesday after passing the lower house unanimously last week. It now awaits assent, with a minimum two-year wait before going into force.

Known as ‘terramation’ or natural organic reduction, a body is placed in a vessel with wood chips, straw, and other plant material. Microbes break down the remains, producing material that can eventually nourish trees and gardens.

US operator Recompose says its process takes 8-12 weeks, including a curing period. Remaining bones are mechanically ground down and mixed back in, and artificial implants are removed.

Under the NSW bill, families can take the resulting compost home to nourish a memorial tree or garden, or arrange for it to be placed elsewhere. However, choosing to become garden material remains a personal decision; operators are barred from turning a deceased person’s remains into compost against their written wishes.

Supporters of the method say the method uses less land and energy than conventional burial and cremation and could ease the financial and environmental burden of dying.

“We are running out of burial space [and] that space can cost as much as $50,000 [Australian dollars],” Greenwich told ABC in June. He predicted that composting will become cheaper than cremation, although local prices have yet to be established.

Not everyone is pleased with the proposal. NSW Premier Chris Minns said in June that he felt “a bit weird about it.” Catholic Weekly columnist Michael Cook described it as a “bizarre solution to saving the planet,” arguing that composting conflicts with religious respect for the human body.

Similar human composting practices have already been approved in several US states and part of Germany. England and Wales are considering rules that could eventually allow it.