I bought a packet of burgundy sunflower seeds and one of them, after a slow start, has grown into a behemoth of a plant. Beautiful flowers, but the thing is probably 8' x 8'. The bees love it, and the flowers are a very pleasant dark red color.
Here's a view from the side of the plant. You can see the one flower that's facing the camera in the upper right 1/4 of the picture. It has more blooms now, and seems like it might tip over, but I think it'll be OK. Maybe next year I'll stake them out so they stay a little straighter.
If you're interested in winning the bracelet of your choice from my Etsy site, here's a link to the blog post at my other blog that has the details. You can enter up until 9 pm Mountain Time Wednesday.