Inula Species, Elecampagne Inula, Horse Yellowhead, Wild Sunflower

Inulahelenium

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Inula (IN-yoo-luh)
Species
helenium (hel-EE-nee-um)
Synonym
Aster helenium
Aster officinalis
Corvisartia helenium
Helenium grandiflorum
Sun Exposure
Full Sun
Foliage
Herbaceous
This plant is resistant to deer
Height
4-6 ft. (1.2-1.8 m)
Spacing
36-48 in. (90-120 cm)
Hardiness
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)
Danger
All parts of plant are poisonous if ingested
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
Patent Information
Non-patented
Propagation Methods
From seed; sow indoors before last frost
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Flagstaff, Arizona

Heber Springs, Arkansas

Ceres, California

Grand Haven, Michigan

Helena, Montana

Neptune, New Jersey

Brooklyn, New York

West Kill, New York

Grassy Creek, North Carolina

Whitsett, North Carolina

WALTERVILLE, Oregon

Kalama, Washington

Olympia, Washington

Stanwood, Washington

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Gardener's Notes:

1
positive
5
neutrals
0
negative
Sort By:
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B
Cedarhome, WA (Zone 8b) | September 2011 | neutral

May need some support, as it gets quite tall. I question why the description lists "all parts" as poisonous - I've never found anything ...Read More

G
(Zone 5a) | May 2006 | neutral

My information says that it is hardy in zones 3-9 and can tolerate partial sun. I have found that it is very hardy and, for me anyway, d...Read More

S
S
(Zone 8b) | February 2005 | neutral

This plant gets very high, so only from a distance you can see that it is flowering. The leaves more down are huge also..I've measured th...Read More

J
J
Palmyra, IL (Zone 5b) | January 2005 | neutral

Root Tea(1/2 ounce to 1 pint water)a folk remedy for pneumonia,whooping cough,asthma,bronchitis,upset stomach:used in China for certain cancers

T
Heber Springs, AR (Zone 7b) | August 2004 | positive

I love the beautiful bright orange/yellow blooms. Great accent plant for mid to back of border. Very drought tolerant. Easy to grow. S...Read More

P
Westbrook, ME (Zone 5a) | November 2001 | neutral

This is a tall dramatic plant that can reach a height of 8 ft. and has showy daisy type blooms. The leaves are broad with downy gray unde...Read More

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