Photo by Melody

PlantFiles: Yellow Trout Lily, Yellow Dog Tooth Violet
Erythronium rostratum

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Family: Liliaceae (lil-ee-AY-see-ee) (Info)
Genus: Erythronium (er-ih-THROH-nee-um) (Info)
Species: rostratum (ro-STRAY-tum) (Info)

10 members have or want this plant for trade.

Category:
Bulbs
Groundcovers
Perennials

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)

Sun Exposure:
Light Shade

Danger:
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Bright Yellow

Bloom Time:
Mid Spring

Foliage:
Smooth-Textured
Mottled

Other details:
Requires consistently moist soil; do not let dry out between waterings
This plant may be considered a protected species; check before digging or gathering seeds

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:
Unknown - Tell us

Propagation Methods:
From seed; stratify if sowing indoors

Seed Collecting:
Unknown - Tell us

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By Dea
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Profile:

4 positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral mbhoakct76 On Apr 24, 2008, mbhoakct76 from Winsted, CT wrote:

a wildflower here in connecticut, the leaves are pretty . it covers a shady moist area under pine trees in my yard. It
flowers a small and barely noticeable yellow flower in early spring and adds a little life to the bare ground in the spring before everything else emerges , it dies back right after flowering, so far i have left it to be with no problems.

Positive kooger On Apr 5, 2007, kooger from Oostburg, WI (Zone 5b) wrote:

These pretty flowers were quite common in our woods in southern Ontario. We frequently went for walks to see them, and trilliums, hepaticas, bloodroot, purple violets and I don't remember what else.

Positive djc600 On Apr 22, 2005, djc600 from Upper Peninsula, MI (Zone 4a) wrote:

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

Positive MartyJo On Apr 19, 2003, MartyJo from Fayette, IA (Zone 4b) wrote:

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

Neutral Weezingreens On Mar 16, 2003, Weezingreens from Seward, AK (Zone 3b) wrote:

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 blooms rise about 8 inches above the plant, resembling a small lily. As the bloom matures, the petals roll back. The foliage is lanceolate and is mottled in a deep purplish brown resembling the spots on a trout (thus the name). The shape of the bulbs accounts for its other common name, Yellow Dog Tooth Violet. This plant does not transplant well and is protected in many areas.

Positive lgsherk On Mar 16, 2003, lgsherk from Vandiver, AL (Zone 7a) wrote:

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 March. It also has lovely mottled green leaves that are similar in color to those of Trillium(in nature they usually grow together.) It grows in rich woods (but I have planted it on my rocky hillside in the shade and it is doing fine) and ravines.

Regional...

This plant has been said to grow 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
Vermilion, Ohio
Clarksville, Tennessee
Merrimac, Virginia
Menasha, Wisconsin



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