Scientists have finally found a way to make something positive of Japanese knotweed, which invades gardens and damages homes. The plant, native to Asia, was initially brought to the UK because of its pretty flowers – but its fast-growing roots are strong enough to pierce concrete, bricks and mortar. Now Environet, an invasive plant specialist which excavates and removes knotweed infestations, has patented a method to turn the roots into a form of charcoal called biochar. Biochar has a honeycomb-
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2021-10-23 00:00:00.0