Sowing heart for an individual grain sowing machine including a seed disk which can rotate in one direction of rotation R, wherein the seed disk has sowing holes in a defined arrangement; a receiving region for receiving the seed in the sowing holes and a delivery region for delivery of the seed; and a cleaning element for cleaning of the sowing holes during operation of the sowing heart between the delivery region and the receiving region. For improved cleaning action of the cleaning element for cleaning each hole, per revolution of the seed disk there being at least two separate cleaning phases which can be easily replaced at the same time. Furthermore, the invention relates to an individual grain sowing machine with a plurality of sowing assemblies with one aforementioned sowing heart at a time and a corresponding cleaning element.