Odd/Excessive Use of the Word "Scrub"

This wind had no agreement with the scrub. They were old enemies. The scrub exposed its rocks and ridges to blunt and bruise the wind. And in return, the wind picked up the dust and thorns and threw the loose stuff of the scrub about, and tore the dead wood from the trees like some mad boy. But on this night the wind was not prepared to settle for dead wood. It pitched itself against the scrub. The brittle trees could not withstand the wind at all. A tree can only bend so much, and then it snaps or turns up at the roots.