Photo by Melody

PlantFiles: Sabine River Wakerobin
Trillium gracile

Family: Trilliaceae
Genus: Trillium (TRIL-ee-um) (Info)
Species: gracile (GRASS-uhl) (Info)


under 6 in. (15 cm)
6-12 in. (15-30 cm)

3-6 in. (7-15 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Light Shade
Partial to Full Shade
Full Shade


Bloom Color:
Dark Purple/Black
Maroon (Purple-Brown)

Bloom Time:
Late Winter/Early Spring
Mid Spring


Other details:
Average Water Needs; Water regularly; do not overwater

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

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
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 pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds

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to view:

By cowpea123
Thumbnail #1 of Trillium gracile by cowpea123

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1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive cowpea123 On Apr 1, 2013, cowpea123 from Coushatta, LA wrote:

A great little trillium in my area. Easy to grow.

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

It has a narrow distribution in western Louisiana and eastern Texas but is morphologically not particularly easy to distinguish from its nearest neighbors, T ludovicianum and T foetidissimum. There seems to be less variation in flower color, generally a brownish-maroon, but, highly characteristically, it does flower several weeks later than these species, often coming into flower when they are already well past their best.


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

Anniston, Alabama
Coushatta, Louisiana

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