A tiny, woolly flower found hiding in Texas’s Big Bend National Park shows the intriguing strangeness of sunflowers ...

What are ways species exchange genes with each other? Hybridization and gene flow are shortcuts to biodiversity that don’t always involve differentiation.

Other types of seeds (such as the white or black sunflower ... you need to grow the annual variety (Helianthus annuus). "You must harvest the flowers after the leaves shrivel, but before the ...