We grew sunflowers successfully for the first time ever this year. The same thing happened to us. My 7yo was very, very sad. Sticky web stuff with "crumbs", and small striped caterpillars--he found some that were where the seeds should be. He harvested some that seemed fine, put them in an airtight container, and the next day they were all webbed together. Our seed heads went to the birds. They liked them!
8/23/07 at 11:45pm