Trillium Species, American Wood Lily, Painted Trillium, Painted Wakerobin

Trilliumundulatum

Genus
Trillium (TRIL-ee-um)
Species
undulatum (un-dew-LAY-tum)
Synonym
Trillium cleavelandicum
Trillium erythrocarpum
Trillium pictum
Sun Exposure
Light Shade
Partial to Full Shade
Full Shade
Foliage
Deciduous
Herbaceous
Smooth
Height
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
Danger
All parts of plant are poisonous if ingested
Bloom Color
White/Near White
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Oakland, Maryland

Royal Oak, Michigan

Oneonta, New York

Newport Center, Vermont

Belfair, Washington

Featured Videos

Gardener's Notes:

3
positives
1
neutral
0
negative
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C
ROSLINDALE, MA | April 2016 | neutral

This is a plant to enjoy in the wild, as its propagation and culture still elude the most skilled nursery people. Instead, try growing on...Read More

C
Oneonta, NY (Zone 4a) | April 2009 | positive

It is native in upstate NY, found at the higher elevations, often near tall pines. It blooms on our property in about the third week of ...Read More

M
Daytona, FL | May 2008 | positive

these plants are spectacular and they tend to grow everywhere here in Vermont. i saw one plant with six leaves!

R
R
Lexington, VA (Zone 6a) | April 2005 | positive

From William Cullina's Growing and Propagating Wildflowers of the United States and Canada:

Quoting: P...Read More


I was fortunate to have large stands of this plant growing on the property I used to own in Maine. In early spring, its distinguishing feature is the bronze-green foliage versus the green of other Trilliums in the area.

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