Hi all, am growing a sunflower and i would like it to be at least 10 feet. It is well on the way and the head is just starting to sprout. Its in full sun until about half one then full shade. It is protected as it is in an alcove next to my house against the porch. I have also caned the bottom. The stalk is lovely and thick at tho mo. I have used 1 dose of miracle gro today. Any other tips from those of you with green fingers? :)