Heartleaf Willow (Salix eriocephala)

Heartleaf Willow

Salix eriocephala

Graceful pendulous branches carry soft catkins like fuzzy gold. Deciduous tree; common name: heartleaf willow.

Full sun
2–3/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; performs best in full sun for robust catkin production
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Watering Tolerates consistently moist to wet soil; avoid prolonged drought conditions
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Temperature Extremely cold-hardy; withstands temperatures as low as -40°C; prefers temperate to cool climates
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Characteristics

  • Leaf: Narrow, lanceolate to heart-shaped leaves with serrated margins; gray-green upper surface, silvery pubescent underside
  • Flower: Dioecious catkins; male catkins are bright yellow, female catkins are pale green
  • Stem/Bark: Slender, flexible branches with smooth grayish-brown bark that becomes furrowed with age
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Care Guide

Watering

Keep soil consistently moist; increase watering during dry spells

Fertilization

Apply balanced slow-release fertilizer once at bud break. Use low-nitrogen fertilizer to promote healthy root and catkin development

Eggshell powder top dressing:Crush dried eggshells into fine powder; sprinkle 1 tbsp around the base of the plant; water thoroughly to release calcium into the soil
Pruning
  • Prune dead, damaged, or crossing branches in late winter to early spring before bud break
  • Thin crowded branches to improve airflow and light penetration for healthy growth
  • Shape multi-stemmed shrub forms as needed; avoid heavy pruning of mature trees to preserve natural form
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic due to salicin; ingestion may cause vomiting, diarrhea, abdominal pain, and lethargy

Humans: Ingestion of large amounts may cause stomach upset; salicin content may trigger aspirin-like allergic reactions in sensitive individuals

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Garden Uses & Culture

Culture: Symbolizes flexibility and resilience in North American Indigenous folklore

Usage: Riparian erosion control, ornamental landscaping, and wildlife habitat for pollinators