Rudbeckia grandiflora (Tall Coneflower)
Tough and easy to grow, Rudbeckia grandiflora (Tall Coneflower) is an upright rhizomatous perennial boasting a profusion of large, bright golden-yellow flowers, 3-4 in. wide (7-10 cm), from mid-spring to late summer. One mature plant can produce 80 or more flowering stems, providing a great floral show. Each blossom features 8-12 drooping yellow rays surrounding a prominent brownish-purple center cone. They are borne atop strong stems that do not need staking. Rich in nectar and pollen, the showy blossoms attract honey bees, butterflies, and pollinating insects. The basal leaves, 6 in. long (15 cm), have long petioles, while the shorter upper stem leaves are stalkless. Leaves and stems are hairy. Long-lived, Tall Coneflower is fairly adaptable, tolerating the moist to wet settings of acid bogs as well as short periods of drought once well-established. Vigorous, Tall Coneflower spreads rampantly by underground rhizomes and is appropriate for large landscapes. It is an excellent addition to naturalized areas, wildflower meadows, prairies, cottage gardens, and native plant gardens. It also makes perfect cut flowers!
- Grows up to 2-5 ft. tall (60-150 cm) and 2-3 ft. wide (60-90 cm). Will naturalize to form large colonies
- Performs best in full sun in average, moist, well-drained soils. Tolerates hot and humid summers, drought and a wide range of soils.
- Great for wildflower gardens, cottage gardens or in prairies and meadows.
- Deadheading old flowers will encourage re-blooming.
- No serious pest or disease issues. Keep an eye out for powdery mildew and leaf spot. Deer and rabbit resistant.
- Native to North America.
Requirements
Hardiness | 5 – 8 |
---|---|
Plant Type | Perennials |
Plant Family | Rudbeckia |
Exposure | Full Sun |
Season of Interest | Spring (Mid,Late)Summer (Early,Mid,Late) |
Height | 2' – 5' (60cm – 150cm) |
Spread | 2' – 3' (60cm – 90cm) |
Spacing | 36″ (90cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Clay, Loam |
Soil pH | Acid, Alkaline, Neutral |
Soil Drainage | Moist but Well-Drained |
Characteristics | Cut Flowers, Showy |
Native Plants | United States, Midwest, Illinois, Kansas, Missouri, Ohio, Southeast, Arkansas, Georgia, Kentucky, Louisiana, Mississippi, Southwest, Oklahoma, Texas |
Tolerance | Clay Soil, Deer, Drought, Rabbit, Rocky Soil |
Attracts | Bees, Birds, Butterflies |
Garden Styles | Informal and Cottage, Prairie and Meadow |