The Willows is a horror tale by Algernon Blackwood (1869-1951). It was first published in 1907 and is available to be read online. After having read it, I'm certainly glad there are no willows near my house.
H.P. Lovecraft said of this story,
Here art and restraint in narrative reach their very highest development, and an impression of lasting poignancy is produced without a, single strained passage or a single false note.
The photo at the top of the post is from Wikipedia.