Broadleaf arnica (Arnica latifolia)

Broadleaf arnica

Broadleaf arnica (Arnica latifolia) is a member of the sunflower family whose bright yellow flowers can be seen in upland forests and meadows. The Latin name latifolia also means broadleaved and these broad leaves help to differentiate this plant from its similar cousin Arnica cordifolia.

Scientific classification

Species

Broadleaf arnica (Arnica latifolia)

Asters bellflowers fanflowers and allies

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Perennial

Lifespan

Yellow

Flower Color

Deciduous

Leaf type

5 - 35 ℃

Ideal Temperature

Spring, Summer

Growth Season

Moderate

Growth Rate

Attributes of Broadleaf arnica

Growth Rate

In spring and summer, broadleaf arnica demonstrates a moderate growth rate, infusing vibrancy as it methodically develops leaves and increases in height. The combination of growth rate and season result in an unambiguous rhythm lasting until the end of summer. Briefly, the plant's growth slows in colder seasons, yet all focus remains on the specified seasons.

Care Guide for Broadleaf arnica

Every week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Water: Broadleaf arnica thrives in moist montane regions and prefers consistent moisture, requiring weekly watering for optimal growth. As an herbaceous perennial, it benefits from increased humidity during its growing season, which boosts foliage health and flower production, with moderate drought tolerance.

Fertilize: For broadleaf arnica, use a balanced, slow-release fertilizer annually in spring, applying about a tablespoon per square foot. Avoid over-fertilizing and adjust feeding as broadleaf arnica matures or with weather changes. Ensure to water after fertilization for better nutrient absorption and root protection.

Pruning: Broadleaf arnica produces bright yellow daisylike flowers and thrives in moist, shaded areas. Prune in early to late spring by removing dead or damaged stems to boost growth and flowering. Regular pruning maintains shape, prevents diseases, and enhances overall health and aesthetic appeal.

Propagation: Broadleaf arnica thrives in well-drained soil and partial shade in Western North America. Propagate by stratifying seeds for better germination, sowing them shallowly, and maintaining moisture. Spring division of established plants is also effective, ensuring careful handling of fragile roots for healthy growth.

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