Rudbeckia grandiflora (Tall Coneflower)
Rough Coneflower, Tall Coneflower, Largeflower 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.
Black-Eyed Susan: Plant Care and Growing Guide
Here are some tips on how to plant and grow black-eyed susans successfullyRead More
Not sure which Rudbeckia to pick?
Compare All Rudbeckia
Buy Rudbeckia grandiflora (Tall Coneflower)
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 |
Shutterstock
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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 |