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Pseudotrillium rivale 01.jpeg
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Pseudotrillium rivale | Brook Wakerobin

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DESCRIPTION
Pseudotrillium rivale produces nodding, bell-shaped flowers in early to mid spring, each composed of three white petals finely speckled with maroon or purple markings. The blooms hang delicately above broad, softly textured green leaves, with yellow stamens held within the downward-facing flower. Subtle variation in speckling intensity is common, giving each blossom a lightly mottled appearance rather than a uniform pattern.

Native to the Pacific Northwest, this woodland perennial is associated with moist forests and streamside habitats of southwestern Oregon and northern California. Its gentle spring display suits shaded garden settings, where the flowers can be appreciated up close along paths or beneath deciduous shrubs before foliage dies back later in the season.

DESCRIPTION
Pseudotrillium rivale produces nodding, bell-shaped flowers in early to mid spring, each composed of three white petals finely speckled with maroon or purple markings. The blooms hang delicately above broad, softly textured green leaves, with yellow stamens held within the downward-facing flower. Subtle variation in speckling intensity is common, giving each blossom a lightly mottled appearance rather than a uniform pattern.

Native to the Pacific Northwest, this woodland perennial is associated with moist forests and streamside habitats of southwestern Oregon and northern California. Its gentle spring display suits shaded garden settings, where the flowers can be appreciated up close along paths or beneath deciduous shrubs before foliage dies back later in the season.

  • Family: Melanthiaceae
    Height: 6 to 10 in
    Width: 6 to 12 in
    Foliage color: Medium to deep green, three broadly ovate leaves arranged in a whorl, often lightly veined
    Flower color: White petals with purplish speckling, yellow center and prominent stamens
    Bloom time: Early to mid spring
    Light requirements: Partial shade to full shade
    Water requirements: Moderate to high
    Maintenance: Low; leave foliage undisturbed after flowering to allow natural dormancy
    Growing zone: USDA zones 4 to 8
    Wildlife attractors: Early pollinating insects, including beetles and small native pollinators

    This plant can be seen at the Bellevue Botanical Garden.

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  • Works Well In:
    ‍ ‍ ● Woodland Gardens
    ‍ ‍ ● Under Trees
    ‍ ‍ ● Pollinator Gardens
    ‍ ‍ ● Pathways & Walkways

    Companion Plants:
    ‍ Oxalis Kalmias
    Trilliums Sword ferns
    Violets Rodgersias

    Design Tip:
    Plant this Pacific Northwest native beside shaded paths or beneath deciduous trees where the intricate flowers can be admired up close. Layer native woodland companions, graceful ferns, and contrasting foliage to create a naturalistic planting rich in texture and seasonal character.