Abstract: Improved methods and processes of extracting rubber from guayule and guayule-like fibrous plant material are disclosed herein in. The methods and process advantageously may include the step of drying the plant material to a moisture content of about 18% to about 36% to produce a feedstock, performing at least a first grind of the feedstock, optionally adding an antioxidant to the feedstock, combining an extraction solvent with the feedstock after the antioxidant has been added to the feedstock to form a miscella, and recovering rubber from the miscella.