EVERGREEN

Plant Encyclopedia

Ratibida columnifera

Ratibida columnifera (upright prairie coneflower, "Kobarengiku")

Japanese name: コバレンギク (小馬簾菊)
Scientific name: Ratibida columnifera

Ratibida columnifera

[Overview]
A perennial 30–90 cm tall.
In its native range it is common in the Great Plains, and also grows on wasteland and along railways and highways.
The whole plant is covered with coarse hairs.
The leaves are alternate, about 12 cm long, and finely and deeply pinnately cut.
A single flower head is borne at the tip of a long flower stalk; the disc florets form a cylinder up to 5 cm long and are dark brown, and there are 3–7 ray florets that hang downward.
The ray florets are yellow, purplish brown and other colors.
The fruit is an achene.

[Cultivation]
Propagate from seed or by division.
It prefers sunny, well-drained soil.
It is easy to grow.
Take care not to overwater: for potted plants, water thoroughly when the soil dries; for plants in the ground, rainfall is sufficient.
Fertilizer can be sparing; for potted plants, a small amount of slow-release fertilizer may be applied in spring or autumn, depending on how the plant looks.
The plant grows tall, so provide a stake.
There are no particular pests or diseases.

Details

Names
English: upright prairie coneflower, Mexican hat, Mexican hat plant, long-headed coneflower, prairie coneflower
Japanese: コバレンギク(小馬簾菊)、メキシカンハット、ラティビダ、ヒメバレンギク(姫馬簾菊)
Life form
Perennial
Habit
Terrestrial
Planting (or sowing) season
March, April, September, October
Flowering season
June, July, August, September
Distribution or origin
North America to Mexico
Height
300–900 mm
Leaf shape
Lobed leaf
Leaf arrangement
Alternate
Inflorescence
Head
Leaf color
Green
Availability of seeds and plants
Low
Form sold
Seeds, Seedlings
Propagation
Seed, Division
Sun exposure
Full sun
Water needs
Moderate
Soil needs
Required
Tolerance
Cold tolerance, Drought tolerance
Suitable uses
Flower bed, Cut flowers, Parks and gardens
Hardiness zone
4a–9b

Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.

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