It also grows very fast, particularly (per acre) if closely spaced, which makes it of interest for biofuels. https://farm-energy.extension.org/poplar-populus-s

It also grows very fast, particularly (per acre) if closely spaced, which makes it of interest for biofuels. https://farm-energy.extension.org/poplar-populus-spp-trees-for-biofuel-production/ https://farm-energy.extension.org/poplar-populus-spp-trees-f...