Closing wheel system for a seeder unit

A closing wheel system for a seeder unit comprising:

• a pair of a closing wheels, each closing wheel mounted to an opposing side of a support arm of a seeder unit, each closing wheel comprising:
• a coil member having a first end and a second end and a plurality of coil windings extending between the first and second ends;
• a base plate having a first surface to which the first end of the coil member is connected and a second surface to which the second end of the coil member is connected such that the windings of the coil member extend around a periphery of the base plate;
• an axle member extending through the base plate and having a free end extending from the base plate for engagement with the support arm of the seeder unit;
• and
• a pair of wedge washer members mounted on the free end of the axle member;
• wherein the pair of wedge washer members are configured to engage with the opposing sides of the support arm of the seeder unit such that when the closing wheel is secured to the side of the support arm of the seeder unit, the wedge washer members engage with the support arm such that the axle member is caused to extend in a downward angle with respect to a horizontal axis to angularly orientate the closing wheels with respect to the support arm of the seeder unit.