Erythronium Species, Yellow Dog Tooth Violet, Yellow Trout Lily

Erythronium rostratum

Family
Liliaceae (lil-ee-AY-see-ee)
Genus
Erythronium (er-ih-THROH-nee-um)
Species
rostratum (ro-STRAY-tum)
Synonym
Sun Exposure
Light Shade
Foliage
Smooth
Veined
Height
6-12 in. (15-30 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Bright Yellow
Bloom Time
Mid Spring
Other Details
Category
Bulbs
Groundcovers
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Orange/Apricot
Where to Grow
Suitable for growing in containers
Bloom Characteristics
Flowers are good for drying and preserving
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From seed; stratify if sowing indoors
Seed Collecting
Regional

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

San Francisco, California

Winsted, Connecticut

Fayette, Iowa

Barbourville, Kentucky

Prospect, Kentucky

Frederick, Maryland

Belleville, Michigan

Bessemer, Michigan

Houghton, Michigan

Alden, New York

Croton On Hudson, New York

Bucyrus, Ohio

Chesterland, Ohio

Cleveland, Ohio

Columbus, Ohio

Vermilion, Ohio

Clarksville, Tennessee

Salem, Utah

Blacksburg, Virginia

Menasha, Wisconsin

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Gardener's Notes:

4
positives
2
neutrals
0
negative
Sort By:
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M
Winsted, CT | April 2008 | neutral

a wildflower here in connecticut, the leaves are pretty . it covers a shady moist area under pine trees in my yard. It
flowers a ...Read More

K
K
Oostburg, WI (Zone 5b) | April 2007 | positive

These pretty flowers were quite common in our woods in southern Ontario. We frequently went for walks to see them, and trilliums, hepati...Read More

D
D
Upper Peninsula, MI (Zone 4a) | April 2005 | positive

Grows wild in the Upper Peninsula of Michigan-blooms just before the Trilliums

M
Fayette, IA (Zone 4b) | April 2003 | positive

Needs to be kept from drying out over the summer while plant is dormant.

W
Seward, AK (Zone 3b) | March 2003 | neutral

E. rostratum grows on wooded slopes & along shaded stream beds. It is a wildflower of the Ozarks, but is found as far north as Ohio. The ...Read More

L
Vandiver, AL (Zone 7a) | March 2003 | positive

The only trout lily that I am familiar with is a native to Alabama, Erythronium rostratum. It has a bright yellow flower that appears in...Read More

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