A planting cup and a planting device are provided. The planting cup is a hollow cup body. The planting cup has a side portion and a bottom portion each formed with a plurality of through holes. A top portion of the planting cup is formed with a first wing extending laterally outwardly. The side portion is formed with a second wing extending laterally outwardly. The first wing is spaced from the second wing by a distance. When the planting cup is disposed on a planting tray to form the planting device, the second wing leans against the planting tray. The first wing is adapted for grasping by a mechanical device or by manpower, such that the planting cup can be removed conveniently.
