Rooney claims a number of the club's top stars have been bothered by the conditions of the notoriously bad pitch.
"Of course [it's a worry]," he told talkSPORT. "You always want a nice surface to play football on and in recent games the pitch hasn't been good enough.
"It could have cost us, thankfully it hasn't, but now the groundsman can get it right in the next couple of weeks.
"It will be difficult because of the weather but hopefully it will be good to have that little break and then hopefully come back to a nice pitch."