Here in London our first sunflowers bloomed yesterday from the ones sown on 1 May.
I've posted a photo on the Facebook group here: http://www.facebook.com/guerrillagardening#
And in Bolgona they're in bloom too. Here's a great album showing both the planting and the recent results there:http://www.facebook.com/media/set/?set=a.112070375544837.25271.100002256263489
Do share your results, either here or on Facebook. It'd be great to see successes (and failures!)