Thanks for the reply Tjohn! Most of my "full size" sunflowers are just as you said, not forming as of yet. However, one of our oldest ones are, its one of the ones I grew in my garden with all the other crops in an effort to attract more pollinators. Also, this year I decided to experiment in trying to see if we could get some sunflowers to grow in miniature sizes. I honestly didn't know if it would work, if they would survive, or of they would form flowers. They are now just over 2 months old, and to my suprise it actually did work 100%. I mentioned this in an earlier post, but realised it was hard to get a scope on their sizes without measurments. So, here they are. Should be starting to open over the next couple of weeks. All of our sunflowers are grown from the same seeds that came from one sunflower that we grew last year.
Miniatures' sizes: 7 inches and 3.5 inches. (From soil to top of flower head)
*First picture is a "full size" in garden that has started to form flower.