Provided is an articulated mower apparatus, comprising a first deck and a second deck. The first deck has a right, left, front, back, top and bottom, a first blade and a first caster. The first blade is rotatable with the first deck and operable to contribute to mowing. The first caster is adapted to support the first deck above a surface. The second deck is engaged with the first deck at a side by a linkage defining an articulation axis. The linkage is adapted to permit the second deck to rotate about the first articulation axis with respect to the first deck. The second deck has: a rotatable blade and is adapted to contribute to mowing; a second caster adapted to support the second deck above the surface; and a drive roller. Also provided are related mower systems.