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PlantFiles: Yellow Trillium
Trillium luteum

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Family: Trilliaceae
Genus: Trillium (TRIL-ee-um) (Info)
Species: luteum (LOO-tee-um) (Info)

5 vendors have this plant for sale.

15 members have or want this plant for trade.

Category:
Perennials

Height:
6-12 in. (15-30 cm)

Spacing:
6-9 in. (15-22 cm)

Hardiness:
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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)

Sun Exposure:
Light Shade

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Bright Yellow

Bloom Time:
Mid Spring

Foliage:
Herbaceous
Silver/Gray

Other details:
Average Water Needs; Water regularly; do not overwater
This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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Thumbnail #1 of Trillium luteum by Galanthophile

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There are a total of 14 photos.
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Profile:

3 positives
3 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral macybee On Nov 23, 2007, macybee from Deer Park, TX (Zone 9a) wrote:

Syns Trillium sessile var luteum, Trillium viride
Wood Trillium
From Appalachian woodlands of eastern USA, this species is distinguished by its rather pointed leaves that are spotted and splashed with paler green, and small stalkless yellow-green flowers that do not open very widely.
Zones 6-9

Positive Marilynbeth On Nov 25, 2006, Marilynbeth from Hebron, KY wrote:

Love the yellow variety and have it planted in front of the porch where I can see it when it blooms and enjoy the leaves too.

Neutral Malus2006 On Mar 14, 2006, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

This trillium was one of the few thriving populations that I have. Sadly I had to put it under neutral as all of one population which was my only population was wiped out along with several nearby native plants one winter. I have planted some new ones a short location away two years ago and is nonblooming. I don't know what happened even though there was a firepit nearby but leaves don't show sighs of scorching or stresses.

Positive DiOhio On May 2, 2004, DiOhio from Corning, OH (Zone 6a) wrote:

I am told that if Trillium luteum does not get good morning sun the blooms will be green and not yellow. My plants have been holding yellow blooms for 2 1/2 weeks now in SE Ohio.

Positive Tiarella On Mar 18, 2004, Tiarella from Tunnel Hill, GA (Zone 7a) wrote:

This is probably the easiest trillium to grow and will naturalize through much of the country. Here in zone 7a (the southernmost area of it's natural population), it appears in mid-March and is usually gone by July 1 with a short bloom season in April.

The yellow flowers add a bright note to the garden and have a lemon smell. I like to plant trilliums with ferns to fill the bed before the ferns emerge.

Trilliums like moist soil but sharp drainage and are found on shaded hillsides in nature.

Seeds must be planted fresh to produce a seedling the following spring. Allowing the seed to dry out will delay germination by a year and germination rates will decline. First year seedlings resemble blades of grass, second year seedlings have a broader almost heart-shaped leaf, and the third year seedling will be a small, three-leaved plant. It may take 7 or more years to have a flowering plant.

Neutral lupinelover On May 31, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

One of the last trilliums to bloom in this part of the country. The yellow sepals and petals remain for weeks, giving the impression that it is in bloom for a very long period.

As soon as the seed is ripe, the plant goes dormant.

Foliage is mottled with silver and white.

Regional...

This plant has been said to grow in the following regions:

Anniston, Alabama
Cordele, Georgia
Indianapolis, Indiana
Hebron, Kentucky
Louisville, Kentucky
Lexington, Massachusetts
Ann Arbor, Michigan
Royal Oak, Michigan
Minneapolis, Minnesota (3 reports)
Honeoye, New York
Glouster, Ohio
Grove City, Ohio
Butler, Pennsylvania
Norristown, Pennsylvania
Wilkes Barre, Pennsylvania
Wrightsville, Pennsylvania
Hope Valley, Rhode Island
Hixson, Tennessee
Knoxville, Tennessee
Newport, Tennessee
Viola, Tennessee
Kingston, Washington



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