are black eyed susans perennials
Description of yellow coneflower, perennial black-eyed Susan: Coneflowers have hairy, 2- to 3-foot stems with simple, saw-toothed edges. They bear daisies with yellow ray flowers, slightly orange at the base, and purple-brown disk flowers, blooming in July and on to frost. Ease of care: Easy. Uses for yellow coneflower, perennial black-eyed Susan: Great flowers for the wild garden or for naturalizing in the meadow garden, Goldsturm is best for the formal bed or border and should be planted in drifts. These flowers are perfect when used in combination with the variegated ornamental grasses. They are also excellent for cutting. Yellow coneflower, perennial black-eyed Susan related species: Rudbeckia laciniata, or the green-headed coneflower, is valuable for a wild garden. Goldquelle or, as it's sometimes called, Gold Drop has big, double flowers on 24- to 30-inch stems. R. fulgida is the native base for most of the hybridized perennial Black-Eyed Susans, and they descend from various varieties of the species. This means naturally-occurring variations, but still the same basic plant. F. Rudbeckia subtomentosa, another wild one with somewhat different flowers. This Black-eyed susan is native to the central US from Wisconsin to Texas. It grows to only about 4 ½ ft, and its flowers are distinguished by blunt tips on each petal. A commercial cultivar from this species is Henry Eilers, which grows to 4 feet and has large, tubular petals with blunt tips. Asters get their name from the Latin word for star, and their flowers are indeed the superstars of the fall garden. Some types of this native plant can reach up to 6 feet with flowers in white and pinks but also, perhaps most strikingly, in rich purples and showy lavenders.Not all asters are fall bloomers. Rudbeckia /rʌdˈbɛkiə/ is a plant genus in the sunflower family. The species are commonly called coneflowers and black-eyed-susans; all are native to North America and many species are cultivated in gardens for their showy yellow or gold flower heads. The species are herbaceous, mostly perennial plants (some annual or biennial) growing to 0.5–3 m tall, with simple or branched stems. Rudbeckia fulgida 'Goldsturm'. Blooms all summer and takes the heat! Award winner! Black-eyed Susans have rich, golden yellow petals set off by bronze-black centers. They are insect and disease free and resistant to drought and deer. It blooms from early summer until frost. Black-eyed Susans are ideal for sunny borders, along walls, by driveways or as a focal point in perennial bed. Drought tolerant, attracts butterflies and hummbingbirds, for a rain garden. Bloom: July-September. Rudbeckia fulgida var. sullivantii 'Goldsturm' is one of the most popular perennials of all time. It offers 3- to 4-inch bright yellow daisies, accented with a dark brown cone from midsummer to fall. It reaches 2 feet tall and is hardy in Zones 4-9. Add a pool of sunshine to the garden with a massed planting of black-eyed Susan. From midsummer, these tough native plants bloom their golden heads off in sun or light shade and mix well with other perennials, annuals, and shrubs. Tall varieties look especially appropriate among shrubs, which in turn provide support. The Several Species, all North America's own. Unlike so many others, The Rudbeckias are not a worldwide group of plants. All of the approximately 30 species are North American natives, making the Black-Eyed Susan a decidedly American (and Canadian) wildflower.
Yes, black eyed susans are perennials.