Echinacea, Purple Coneflower 'Ruby Star'

Echinacea purpurea

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Echinacea (ek-in-AY-shee-a) (Info)
Species: purpurea (pur-PUR-ee-uh) (Info)
Cultivar: Ruby Star
Additional cultivar information:(aka Rubinstern)



Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade




Foliage Color:

Unknown - Tell us


36-48 in. (90-120 cm)


18-24 in. (45-60 cm)


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)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Where to Grow:

Unknown - Tell us



Bloom Color:


Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


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

Citrus Heights, California

Clayton, California

Denver, Colorado

Cordele, Georgia

Algonquin, Illinois

Machesney Park, Illinois

Fishers, Indiana

Westfield, Indiana

Davenport, Iowa

Inwood, Iowa

Nichols, Iowa

Hebron, Kentucky

Smiths Grove, Kentucky

Aberdeen, Maryland

Haydenville, Massachusetts

Commerce Township, Michigan

Dearborn Heights, Michigan

Jackson, Michigan

Pinconning, Michigan

Royal Oak, Michigan

Exeter, New Hampshire

Long Branch, New Jersey

Clifton Park, New York

Elba, New York

Concord, North Carolina

Elizabeth City, North Carolina

Cleveland, Ohio

Warren, Ohio

Cranberry Twp, Pennsylvania

Drexel Hill, Pennsylvania

Norristown, Pennsylvania

Reading, Pennsylvania

West Chester, Pennsylvania

West Newton, Pennsylvania

Knoxville, Tennessee

Broaddus, Texas

Houston, Texas

Wells, Texas

Arlington, Virginia

Fox Island, Washington

Kalama, Washington

Seattle, Washington

Stanwood, Washington

Beverly, West Virginia

show all

Gardeners' Notes:


On Jun 28, 2011, BUFFY690 from Prosperity, SC (Zone 7b) wrote:

Has performed way past my expectations, since I took a while to get this young plant in the ground from it's 4-inch nursery pot...:(. Has tolerated extreme heat, drought, humidity...couldn't want a more carefree plant...can't wait to collect the seeds as it is parked near a white swan...maybe they crossed some pollen.


On Jul 1, 2010, themikeman from Concord, NC (Zone 7a) wrote:

Extremely beautiful textbook echinacea, large blooms, and nice large dark green leaves, this plant is not very hardy however when it comes to high humidity heat where i live in rural NC, it seem to like higher elevations and dryer heat, the humidity just cooked the leaves on these this summer where i am; where it is very flat with swealtering humidity, even with plenty of water and a little shade, so again not an intense heat plant. mike.


On May 6, 2006, dmj1218 from west Houston, TX (Zone 9a) wrote:

Medium to tall bloomer, glowing intense carmine-red, very substantial flowers with horizontal petals on robust plants.


On May 24, 2004, kooger from Oostburg, WI (Zone 5b) wrote:

Great plant, easy to grow. Mostly gets ignored and it does fine in hot sun.