Trillium ovatum (Western Trillium)
Pacific Trillium, Pacific Wake-Robin, Western Trillium, Western Wake-Robin, Coast Trillium, Coast Wake-Robin
Trillium ovatum (Western Trillium) is a vigorous clump-forming perennial with erect stems clad with a whorl of 3 broadly ovate leaves. From the center of the leaf whorl emerges a solitary, pure white flower in late winter to late spring, adorned with 3 recurved petals and golden yellow anthers. Long-lasting, the large and charming blossoms turn pale pink as they age and give way to berry-like capsules. Western Trillium is a very long-lived species that is primarily pollinated by beetles, moths, and bumblebees. Easy to grow, this graceful Trillium is a lovely choice for wildflower gardens or woodland gardens.
- Grows up to 10-18 in. tall (25-45 cm) and 8-12 in. wide (20-30 cm). Will spread gradually if left undisturbed.
- Performs best in part shade or full shade, in deep, humus-rich, acid to neutral, moist, well-drained soils. Keep well watered during dry weather in spring and early summer. Mulch in fall with leaves.
- Excellent when massed in shaded beds and borders, underplanting shrubs or roses.
- Because trilliums go dormant by midsummer, pair them with other shade-loving perennials that will look good the rest of the gardening season and share their place until they reappear the following spring.
- Generally disease free, this plant requires little maintenance. Watch out for slugs and snails.
- Propagate by rhizome division (in fall) or seed. Seeds do best when planted outdoors soon after fruits have ripened. 1 month stratification is necessary.
- Young plants can take 3-5 years to bloom and another 5-8 years to develop into a lovely clump.
- Native to western North America
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Requirements
Hardiness | 5
– 8 |
---|---|
Heat Zones | 5
– 8 |
Climate Zones | 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 14, 15, 16, 17 |
Plant Type | Perennials |
Plant Family | Trillium - Wake Robins |
Exposure | Partial Sun, Shade |
Season of Interest |
Spring (Early,Mid,Late) Summer (Early) Winter |
Height | 10" – 2' (25cm – 60cm) |
Spread | 10" – 1' (25cm – 30cm) |
Spacing | 12" (30cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Loam, Sand |
Soil pH | Acid, Neutral |
Soil Drainage | Moist but Well-Drained |
Characteristics | Showy |
Native Plants | United States, California, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Colorado, Montana, Wyoming |
Attracts | Birds, Hummingbirds |
Garden Uses | Beds and Borders, Underplanting Roses and Shrubs |
Garden Styles | Informal and Cottage, Prairie and Meadow |
Randy Bjorklund, Nikki Yancey, Shutterstock
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Requirements
Hardiness | 5
– 8 |
---|---|
Heat Zones | 5
– 8 |
Climate Zones | 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 14, 15, 16, 17 |
Plant Type | Perennials |
Plant Family | Trillium - Wake Robins |
Exposure | Partial Sun, Shade |
Season of Interest |
Spring (Early,Mid,Late) Summer (Early) Winter |
Height | 10" – 2' (25cm – 60cm) |
Spread | 10" – 1' (25cm – 30cm) |
Spacing | 12" (30cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Loam, Sand |
Soil pH | Acid, Neutral |
Soil Drainage | Moist but Well-Drained |
Characteristics | Showy |
Native Plants | United States, California, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Colorado, Montana, Wyoming |
Attracts | Birds, Hummingbirds |
Garden Uses | Beds and Borders, Underplanting Roses and Shrubs |
Garden Styles | Informal and Cottage, Prairie and Meadow |