(Leah Hogsten | The Salt Lake Tribune) "I wanted to have a voice specifically for the trees," said Katie Pugh, who yarn bombed the trees in City Creek Park across from her home for the week to celebrate Earth Day and Arbor Day. "It's awesome that the park exists and its been unaltered for so long." Salt Lake City's Department of Public Utilities has proposed a series of upgrades for its Memory Grove, but neighborhood residents say a new pump house the city wants to build is too big, unsightly and threatens to take out several mature trees and ruin the aesthetics of the park.