Everyone loves big, beautiful sunflowers (Helianthus annuus), right ... stunning pollen-free varieties can ensure you don't miss out on these beautiful flowers. Read more: 14 Tips For Growing ...

Here's what to know about each kind of sunflower. There are close to 150 species of sunflowers in the genus Helianthus. Most are characterized by brightly colored flowers and rough, sandpaper-like ...

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

Like you, birds have a sweet spot for sunflower (Helianthus annuus) seeds — and for good reason. These seeds fulfill their nutritional needs, successively replacing the energy expended on foraging, ...

This year's trials from the Massachusetts Horticultural Society reaffirmed the importance of trialing a diverse range of ...

After arriving and propagating in Europe in the 16th century, the plant became a much-loved ornamental flower, while oil was extracted from its seeds. Its binomial name of “Helianthus annuus ...