Jointed goatgrass closely mimics the life cycle of winter wheat. Seeds germinate in the fall, plants overwinter, and resume growth in the spring. Although seeds typically germinate in the fall, jointed goatgrass can also germinate during March and April and still produce viable seed. Jointed goatgrass matures and shatters seed on the soil surface during, or up to three weeks before wheat harvest. Spring germinating plants usually mature and produce seed later than fall germinating plants.