Sweet Gallberry (Ilex coriacea)

Sweet Gallberry

Ilex coriacea

Glossy evergreen leaves hold quiet coastal resilience. Dense evergreen shrub; common name: sweet gallberry.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerant of coastal salt spray and windy conditions
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Watering Tolerates wet, boggy soils; water regularly during prolonged dry spells to prevent leaf browning
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Temperature Hardy to USDA zones 7–10; withstands mild frost and summer heat without significant damage
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Characteristics

  • Leaf: Leathery, elliptical evergreen leaves with smooth margins, glossy dark green upper surface
  • Flower: Small, white, fragrant axillary clusters; dioecious (separate male/female plants)
  • Fruit: Dark purple to black drupes, persistent through winter
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Care Guide

Watering

Keep soil consistently moist; tolerate temporary flooding

Fertilization

Apply diluted acidic fertilizer once monthly. Use fertilizer formulated for acid-loving evergreen shrubs

Coffee grounds compost tea:Use fully composted coffee grounds; dilute 1:25 with water for root drench to maintain soil acidity without burning roots
Pruning
  • Remove dead or damaged branches in late winter to maintain plant shape and airflow
  • Thin dense inner growth in early spring to improve light penetration for fruit production
  • Prune to control height in early spring before new growth emerges
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains saponins and methylxanthines, causing vomiting, diarrhea, drooling, and lethargy

Humans: Ingestion of leaves or fruit may cause mild gastrointestinal irritation, including nausea and abdominal cramping

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental coastal shrub; fruit provides food for birds and wildlife