I lived in North Dakota many many years ago and there were miles and miles of sunflower fields. It was amazing to see the beautiful flowers as they turned their faces toward the sun as it moved across the sky.
Sunflowers are great for feeding birds and they are just a beautiful addition to any yard or garden. They will typically reseed themselves from seeds that have fallen throughout the summer, but you can also harvest your own sunflower seeds easily. From Hometalk.com,
(1). Once your Sunflower has faded, don’t cut it right away, wait a touch more than usual than any other faded flowers… than not to much longer
after, dead head the sunflower head.
(2) Quickly with your hand Brush off the Orange/Yellow baby petals & your seeds will be reveiled & then place the sunflower head in a dry spot for a couple days to allow the flower seeds time to fully dry. Don’t wait to long, I’ve found they become too moldy and brittle after a longer period of time.
(3) Once fully Dried & Ready, Slightly Bend Flower Head and/or you can even split flower head with your hands & with just your fingers, simply push the sunflower seeds right out. They come out very easily. You will be surpised how many seeds you will get from one Sunflower head.
(4) Once done removing all your seeds, place on dish or flat surface of any sort and allow them time to completely dry out, leaving no moisture whats-so-ever.
This will also work on other blooming plants, so transfer the know-how to your other favorite flowers!