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The most appropriate trees for an area are the local ones and with a view to Climate Change, the local species with good adaptability to climate change characteristics (need less water, can rezist temperatures variations, etc.). Pawlonia is being pushed/marketed heavily on the internet due to some superficial/mercantile characteristics (fast growth, big foliage), but besides that, in the agroforestry/agroecology academia, Paulonia is known to be just a marketing buzz, and a relatively dangerous one.