North America Native Plant

Giant Wakerobin

Botanical name: Trillium chloropetalum var. giganteum

USDA symbol: TRCHG

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Trillium giganteum (Hook. & Arn.) A. Heller (TRGI2)  âš˜  Trillium sessile L. ssp. giganteum (Hook. & Arn.) A.E. Murray (TRSEG)  âš˜  Trillium sessile L. var. giganteum Hook. & Arn. (TRSEG2)   

Giant Wakerobin: A Spectacular Native Wildflower for California Shade Gardens If you’re looking to add some serious wow-factor to your shady garden spots, meet the giant wakerobin (Trillium chloropetalum var. giganteum). This stunning California native is like the supermodel of the woodland wildflower world – elegant, distinctive, and absolutely captivating ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Giant Wakerobin: A Spectacular Native Wildflower for California Shade Gardens

If you’re looking to add some serious wow-factor to your shady garden spots, meet the giant wakerobin (Trillium chloropetalum var. giganteum). This stunning California native is like the supermodel of the woodland wildflower world – elegant, distinctive, and absolutely captivating when it makes its grand entrance each spring.

What Makes Giant Wakerobin Special

Giant wakerobin is a perennial forb that belongs to the lily family, and true to its name, this variety is notably larger than its cousins. Picture this: three gorgeous petals arranged in perfect symmetry above three beautifully mottled leaves, creating a natural work of art that seems almost too perfect to be real. The flowers can range from pristine white to soft pink to deep, dramatic red – nature’s way of keeping us guessing!

This native Californian calls the coastal ranges and Sierra Nevada foothills home, where it thrives in the dappled light of oak woodlands and mixed forests. As a true California native, it’s perfectly adapted to our Mediterranean climate and seasonal rhythms.

Why Consider Giant Wakerobin for Your Garden

Here’s what makes this wildflower worth adding to your garden wish list:

  • Stunning spring display: The large, three-petaled flowers create an unforgettable show in late winter to early spring
  • Native plant benefits: Supports local ecosystems and attracts native pollinators like beetles and flies
  • Low maintenance: Once established, requires minimal care and naturally goes dormant in summer
  • Shade tolerance: Perfect for those tricky shady spots where many plants struggle
  • Unique foliage: The distinctive three-leaf pattern with attractive mottling provides interest even when not in bloom

Important Conservation Note

Before you rush to plant giant wakerobin, here’s something important to know: this variety has a conservation status that suggests it may be uncommon in the wild. If you decide to grow it, please make sure you’re sourcing your plants or seeds from reputable nurseries that propagate their stock responsibly – never collect from wild populations.

Growing Giant Wakerobin Successfully

Giant wakerobin thrives in USDA hardiness zones 7-9, making it suitable for most of California’s gardening regions. Here’s how to keep these beauties happy:

Ideal Growing Conditions

  • Light: Partial to full shade – think woodland understory conditions
  • Soil: Moist, well-draining soil rich in organic matter
  • Water: Consistent moisture during growing season, but can tolerate summer dryness during dormancy
  • Temperature: Needs cool winter temperatures for proper development

Planting and Care Tips

  • Plant rhizomes in fall, about 3-4 inches deep
  • Choose a protected spot that mimics natural woodland conditions
  • Add compost or leaf mold to improve soil structure
  • Mulch around plants to retain moisture and suppress weeds
  • Be patient – trilliums can take several years to reach blooming size
  • Avoid disturbing established plants, as they don’t like to be moved

Perfect Garden Companions

Giant wakerobin plays beautifully with other California native shade plants. Consider pairing it with native ferns, wild ginger, or other woodland wildflowers to create an authentic California forest understory feel in your garden.

Is Giant Wakerobin Right for Your Garden?

This spectacular native is perfect for gardeners who:

  • Love unique, eye-catching wildflowers
  • Want to support native plant conservation
  • Have shady garden areas that need something special
  • Appreciate plants with seasonal rhythms and natural dormancy periods
  • Are committed to responsible sourcing and patient gardening

Giant wakerobin isn’t the right choice if you need instant gratification or prefer plants that provide color all season long. But if you’re willing to wait for nature’s timing and source your plants responsibly, you’ll be rewarded with one of California’s most spectacular native wildflowers gracing your shade garden each spring.

Giant Wakerobin

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Trillium L. - trillium

Species

Trillium chloropetalum (Torr.) Howell - giant wakerobin

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA