With its yellow flowers, the cutleaf coneflower provides rays of light in the garden in summer. Thus planting and care is successful.
Profile of cutleaf coneflower:
Scientific name: Rudbeckia laciniata
Plant family: daisy family (Asteraceae
Other names: –
Sowing time: spring
Planting time: spring or autumn.
Flowering period: July to September
Soil quality: sandy to loamy, nutrient rich
These information are for temperate climate!
Use in: flowerbeds, flower bouquets, borders, cottage garden, flower garden, natural garden, prairie garden
Winter hardiness: hardy, USDA Plant Hardiness Zones: 3 (-37 °C / -35 °F)
Bee and insect friendly: Yes
Plant characteristics and classification of cutleaf coneflower
Plant order, origin and occurrence of cutleaf coneflower
The home of the cutleaf coneflower (Rudbeckia laciniata) is in North America: On humid meadows or at water edges the species from the daisy family (Asteraceae) can be found from Quebec to Florida, west to Montana and New Mexico. In Europe, Rudbeckia laciniata is now considered a neophyte.
Characteristics of cutleaf coneflower
If the cutleaf coneflower feels comfortable at its location, it can grow up to 200 centimeters (80 in) high. The deciduous perennial spreads by rhizomes. The growth is bushy.
The stalked basal leaves are three to five-part and up to 30 centimeters (12 in) long. The stalkless stem leaves usually appear three-lobed.
The cutleaf coneflower is one of the early flowering coneflower species: from July to September the flower heads open. They have a greenish-yellow, conical disc and yellow, slightly drooping ray florets. Some varieties have filled flowers: In these varieties all disc flowers are transformed into ray florets.
With the pure type, achenes, nut-similar fruits, can form.
Cutleaf coneflower – cultivation and care
Like its relatives, the cutleaf coneflower also loves a warm, sunny place in the garden.
Ideal for cutleaf coneflower is a nutrient rich, fresh to moist soil with a sandy to loamy consistency.
The best time to plant the perennial is spring or autumn. Before planting, it is advisable to enrich the soil with compost to help the plant get started.
To prevent the cutleaf coneflower from falling over, it should be supported as a precaution, for example with a perennial ring. It is advisable to cut the coneflower immediately after flowering or in spring before new shoots appear. Do not forget to water the plants if the drought persists.
Rudbeckia laciniata are divided approximately every four to five years in spring. This way they remain beautifully vital.
The perennials can best be propagated by division, in the pure species propagation by sowing is also possible. The later is best done in spring.
Diseases and pests
Especially young plants should be protected from snails. Otherwise aphids and powdery mildew can occur.
Rudbeckia laciniata is hardy down to -37 °C / -35 °F. Therefore you do not have to worry about winter protection.
Use in the garden
The cutleaf coneflower can be integrated wonderfully into the nature garden, cottage garden or prairie garden. The tall growing species looks magnificent not only in sunny perennial beds: It also unfolds its effect when leaning against a garden fence. Beautiful companions are asters and ornamental grasses. With its long stems, the cutleaf coneflower is also a popular cut flower.
The double flowers of Rudbeckia laciniata ‘Goldball’ shine golden yellow. With a height between 180 and 200 centimeters (72 to 80 in), the variety is not very stable. Goldball is decorated with lemon yellow double flowers and remains more compact than the species with a height of 70 to 80 centimeters (28 to 32 in).
The variety Rudbeckia laciniata ‘Gold Spring’ grows between 120 and 150 cm (48 to 60 in) high with a width of up to 100 cm (40 in). The leaves are deeply slit and three to seven-part, the partial leaves are pointed and clearly serrated. The leaf color is medium to dark green. The flowering time is from July to September. The lemon yellow, densely filled flowers have a greenish coloured center. This variety is well suited as a cut flower.