Will 8 year old sunflower seeds germinate?

Yes, 8-year-old sunflower seeds can germinate, but their viability may be significantly reduced over time. Factors such as storage conditions—temperature, humidity, and exposure to light—affect their ability to sprout. It's a good idea to test a few seeds by placing them in moist soil to see if they germinate before planting a larger batch. If they do sprout, you can proceed with planting; if not, it may be best to acquire fresh seeds.