The Familiar Sunflower
This giant representative of an extremely common family is deservedly popular, because of its hardiness, luxuriant growth, and the striking appearance of its large flowers. The sunflower will grow in almost any soil, yet nevertheless it responds readily to good treatment. A plant that is thoroughly watered may grow to twice the dimensions of a companion plant only a few feet away that suffers somewhat from thirst. Try the experiment for yourself next season.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 8 Chapter 3