They did a test run of PLA bricks resembling plants back in 2018 #40320 Plants from Plants https://brickarchitect.com/2018/40320-plants-made-from-plants-lego-

They did a test run of PLA bricks resembling plants back in 2018 #40320 Plants from Plants https://brickarchitect.com/2018/40320-plants-made-from-plants-lego-sustainability/ https://brickarchitect.com/2018/40320-plants-made-from-plant... Trouble with anything biodegradable is it biodegrades while you're using it, you'd essentially have to keep it in a cool, dry place away from sunlight