Western White Trillium (Trillium ovatum)

Western White Trillium

Trillium ovatum

Delicate three-part blooms nod softly in spring woodlands. Deciduous perennial wildflower; common name: wake-robin.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Dappled woodland shade; tolerates low indirect light, avoid harsh midday direct sun
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Watering Keep soil consistently moist but not waterlogged; avoid allowing the root zone to dry out completely
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Temperature Hardy to freezing temperatures; prefers cool spring conditions, avoid prolonged heat above 25°C
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Characteristics

  • Leaf: Three broad, ovate, dark green leaves arranged in a whorl at the stem apex.
  • Flower: Solitary white bloom (fades to pale pink with age) with three petals, nodding or upright.
  • Stem: Slender, smooth green stem supporting the leaf whorl and single flower.
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Care Guide

Watering

Keep soil evenly moist; apply mulch to retain moisture and regulate soil temperature

Fertilization

Apply diluted organic feed once at emergence. Use low-nitrogen organic feed to avoid disrupting native soil balance

Composted leaf mold tea:Steep fully composted oak or maple leaf mold in water for 24 hours; dilute 1:20 for root drench to enrich woodland soil without chemical additives
Pruning
  • Remove spent flower heads after blooming to redirect energy to root storage
  • Cut back yellowing foliage in late summer once the plant enters dormancy
  • Divide overcrowded clumps only in early spring before new growth emerges
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no adverse effects from ingestion or contact

Humans: No documented toxicity to humans; safe for handling and incidental contact

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Garden Uses & Culture

Culture: Symbolizes spring renewal in Pacific Northwest woodlands; used in traditional Indigenous medicinal practices for mild ailments

Usage: Ornamental native woodland garden plant; supports native bee and butterfly pollinators