There has been a growing interest in trying to combine the cold hardiness and disease resistance of the American species with the better qualities of the European species.

With wispy tufts that drape trees like haunted-house cobwebs, old man’s beard lichen can be an unexpected sight in northern Minnesota forests. It resembles a petite version of Spanish moss seen on ...

ST. PAUL -- With the threat of emerald ash borer potentially killing ash trees in Minnesota, homeowners must begin planning for the future and plant a more diverse selection of tree species in their ...