Late-season sunflowers

These sunflowers were grown in a four- or five-foot-long mailing tube. I perforated and then filled the tube with soil, and then I duct-taped the bottom to prevent water from completely weakening the cardboard.

Despite the heat (this whole setup was situated in the asphalt lot behind my building, along with tomatoes and chile peppers), the plant produced dozens of rust-tinged flowers. This was a variety of the plant that grows wild in New Mexico and Colorado.