Spearleaf Arnica (Arnica Longifolia) - Growing Guide | Neighborbrite

Spearleaf Arnica (Arnica Longifolia) - Perennials

Grow conditions

Sunlight

Full sun to partial shade

Hardiness zone

3-8

Min. Temperature

−40°F (−40°C)

Soil type

Loam, Sandy, Well drained, Moist

Soil pH

Acidic, Neutral

Spearleaf Arnica

Arnica Longifolia

Grow conditions

Sunlight: Full sun to partial shade
Hardiness zone: 3-8
Min. Temperature: −40°F (−40°C)
Soil type: Loam, Sandy, Well drained, Moist
Soil pH: Acidic, Neutral

Plant traits

Mature height12 in-24 in

Mature spread12 in-24 in

Plant typePerennials

Bloom seasonSpring, Summer

Foliage typeDeciduous

Tolerance & safety

Drought tolerant❌No

Fire tolerant⚖️Moderate

Pet safe❌Toxic

Deer resistant✅Yes

Pollinator-friendly—Unknown

Spearleaf Arnica (Arnica Longifolia) - Perennials

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Spearleaf Arnica (Arnica Longifolia) - Perennials

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