LUDINGTON (WKZO) -- Ludington police need plant experts' help to find Katherine Phillips.
Ludington police chief Mark Barnett says very rare seeds were found on Kate's father's shoes. Barnett says he needs volunteers to look for that rare sedge plant.
Phillips was four-months-old when she vanished in June 2011. She was last seen with her father, Sean Phillips, who's now in prison for unlawful imprisonment.