Arnica Species, Heart-Leaved Arnica, Heart-Leaf Leopardbane

Arnicacordifolia

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Arnica (ARN-ee-kuh)
Species
cordifolia (kor-di-FOH-lee-uh)
Synonym
Arnica cordifolia var. pumila
Arnica cordifolia subsp. whitneyi
Sun Exposure
Sun to Partial Shade
Light Shade
Partial to Full Shade
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing
12-15 in. (30-38 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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
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
Propagation Methods
By dividing the rootball
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
Regional

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Gardener's Notes:

1
positive
0
neutral
0
negative
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M
Benton, KY (Zone 7a) | February 2005 | positive

Broad yellow flower heads top the stems of this plant with heart-shaped leaves. It forms broad patches along alpine roadways of Alaska an...Read More

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Bulldog Ant
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