Narrow-leaf sunflower. The narrow-leaf sunflower, Helianthus angustifolius, is a beautiful addition to a natural area of the yard where it can ramble and spread.

This scan of the lower leaf of the Helianthus annuus looks a little like something out of a sci-fi movie. Both the spiny thing and the worm-like things are trichomes , or outgrowths, on the ...

Japanese Sunflower - also known as the Silver-leaf Sunflower (Helianthus argophyllus) is not from Japan, but is native to Texas, Florida and North Carolina.

For those who enjoy starting plants from seed, the annual Silver-Leaf Sunflower (Helianthus argophyllus) a native of Texas, Florida and North Carolina, is a spectacular annual sunflower.