How Can I Get In Contact With Pet Shop Owners In Japan To Sell Sunflower Heads?
I have 4 acres of planted sunflowers and come October I will have thousands of heads for sale. They are great treats for birds, hampsters, or any small pet. You can store them until winter and put them out for birds to help them through the cold months as well.

Google pet shops for the various cities in Japan. You should get a list to make contacts.