Seed harvester and related methods

A harvester for removing and collecting seed from guayule plants, comprising:

• one or more seed collection assemblies, each seed collection assembly comprising:
• a frame body extending between a forward portion and a rearward portion along a longitudinal axis;
• at least one seed collection bin removably supported by the frame body;
• a support structure having a first end pivotally attached to the frame body and a second end distal from the frame body such that the frame body and support structure do not pivot more than 90 degrees in a side-to-side or upward and downward direction;
• at least one set of a plurality of fixed projections for contacting the branches to dislodge seeds, each set of the plurality of projections attached to the second end of the support structure at an attachment point, and extending downward toward the frame body and rearward toward the rearward portion of the frame body, the plurality of fixed projections fanning out as they extend outward from the attachment point;
• at least one wheel assembly rotatably mounted to the rearward portion of the frame body;
• wherein the at least one seed collection bin is positioned to receive dislodged seed that fall downward by gravity.