Poplar trees are apparently very fast growing; they are used for many interesting things when reduced to timber.
The Mona Lisa was painted on a ply panel made of poplar wood. They are also used in the production of match sticks and last but not least, a certain variety of mushroom will only grow on old poplar timber.
Now after all that, I must be honest and tell you, the only reason I painted them is because I like the shape and their autumn colours. Shame hey!!