Sunflower seeds are usually ready for harvest between mid-September to October. As the petals turn brown you can wrap the seed heads with a brown paper bag or cheesecloth and secure it with a twist tie. This will protect the seeds from birds as well as catch any seeds that drop.
Sunflowers are mature when:
• Florets in the center of the head shrivel
• The head turns downward
• The back of the…