Thickleaf Yerba Santa (Eriodictyon crassifolium)

Thickleaf Yerba Santa

Also known as: Thick-Leaved Yerba Santa

Thickleaf Yerba Santa (Eriodictyon crassifolium) is an evergreen summer-deciduous shrub native to California and Oregon. It can grow up to 3.5 m tall in one growing season. Fragrant lavender flowers bloom in spring, attract hummingbirds, bees, and butterflies, and are the sole food source for the Variable Checkerspot butterfly.

Scientific classification

Species

Thickleaf Yerba Santa (Eriodictyon crassifolium)

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Perennial

Lifespan

Shrub

Plant Type

Spring

Bloom Time

91 cm to 1.8 m

Plant Height

90 cm to 1.8 m

Spread

2.5 cm

Flower Size

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Care Guide for Thickleaf Yerba Santa

Every 2-3 weeks

Water

Full sun

Sunlight

10 - 35 ℃

Ideal Temperature

Water: Thickleaf Yerba Santa has moderate water needs and is drought-tolerant, requiring watering every 2-3 weeks for optimal health. As an evergreen, thickleaf Yerba Santa retains leaves year-round and demands consistent moisture across seasons for sustained growth and vitality.

Fertilize: Thickleaf Yerba Santa thrives with balanced nutrition fertilizer applied semi-annually and high-nitrogen during vegetative stages. Dilute concentrates and monitor growth for adjustments. Water thoroughly post-fertilization and distribute evenly around the base to ensure proper nutrient absorption and reduce root burn risks, adapting to regional needs.

Pruning: Thickleaf Yerba Santa features thick, leathery leaves and aromatic properties. Prune dead or damaged branches and thin dense growth in early to late winter during dormancy. Regular pruning promotes healthier growth and flowering while removing suckers prevents energy diversion from main growth.

Propagation: Thickleaf Yerba Santa is valued for its medicinal properties and woolly leaves. For successful propagation, use healthy cuttings from non-flowering shoots with leaf nodes. Keep soil well-draining and maintain consistent moisture to encourage rooting, while protecting from extreme conditions ensures stable growth.

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Images of Thickleaf Yerba Santa

Care Guide for Thickleaf Yerba Santa

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Common Pests & Diseases