Sunflowers found to share nutrient-rich soil with others of their kind
(PHYSorg.com Biology)

A team of researchers at the University of Alberta has found that sunflower plants send fewer roots into nutrient-rich patches of soil when another sunflower is attempting to access the same patch. In their paper published in the journal Proceedings of the Royal Society B, the group describes their study of neighborly location in sunflowers, and what they learned from it.