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PlantFiles: Eastern Purple Coneflower, Dwarf Purple Coneflower
Echinacea purpurea 'Red Knee High'

 
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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Echinacea (ek-in-AY-shee-a) (Info)
Species: purpurea (pur-PUR-ee-uh) (Info)
Cultivar: Red Knee High
Additional cultivar information: (PP20411)
Hybridized by Laviana; Year of Registration or Introduction: 2008

2 vendors have this plant for sale.

One member has or wants this plant for trade.

Category:
Perennials

Height:
18-24 in. (45-60 cm)

Spacing:
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
N/A

Bloom Color:
Magenta (Pink-Purple)
Red

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Patented

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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Thumbnail #1 of Echinacea purpurea by DaylilySLP

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Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive marywalters On Feb 29, 2012, marywalters from Holland, MI wrote:

Petals are re-flexed back where many of the new coneflowers are flat. So its' got the old-fashioned look but with better flowering, good vigor and a vibrant red color. Nicely compact - good toward the front of the border. This would look lovely combined with blues such as Russian Sage, Blue Chip Buddleia and a host of other perennials.

Neutral QCHammy On Jul 16, 2009, QCHammy from San Tan Valley, AZ (Zone 9a) wrote:

A sport of 'Kim's Knee High' with dark magenta petals around a russet red cone.

Regional...

This plant has been said to grow in the following regions:

Holland, Michigan



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