Willow is indeed very weak. I lived in a road that ran parallel with a road aptly named Willow Avenue, though, the road I lived in had just as many willow trees. We were forever trimming them back. They grow like a weed and indeed, when it is stormy you find branches all over the place. They are extremely hardy and can be grown easily from cuttings though the roots can do a bit of damage to paths.
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