Sunflowers are gorgeous native plants that can grow to amazing heights in a single year. But are sunflowers perennials that will come back after the winter? That depends on which sunflower you’re ...

Giants among flowers, sunflowers (Helianthus annuus) can grow up to 12 feet tall. Their round heads aren't a single blossom; they're made up of hundreds of tiny blooms that become the large black ...