Ron, I have not tried to grow sunflowers because I think the critters would just get them. I had one plant come up volunteer and had a huge bloom. I was getting really anxious to see how it would turn out when the bloom and plant was suddenly ripped down and shredded. I had both deer and 'coon tracks around the plant, so I don't know which was first. After my entire corn crop was wiped out in one night, I decided I would not grow anymore crops to just feed 'coons.

Actually, as much as I complain, I don't mind buying a bag of sunflower seeds every couple of months. My biggest feeder will last 5 days or more without refilling. We always have beautiful birds at our feeders and our grandson is thrilled to see them. He's never lived anywhere with so many critters.