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PlantFiles: Trillium
Trillium grandiflorum 'Flore-pleno'

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Family: Trilliaceae
Genus: Trillium (TRIL-ee-um) (Info)
Species: grandiflorum (gran-dih-FLOR-um) (Info)
Cultivar: Flore-pleno

4 members have or want this plant for trade.

Category:
Perennials

Height:
12-18 in. (30-45 cm)

Spacing:
12-15 in. (30-38 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
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)
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

Danger:
Unknown - Tell us

Bloom Color:
Pale Pink
Pink
White/Near White

Bloom Time:
Mid Spring
Late Spring/Early Summer

Foliage:
Herbaceous
Smooth-Textured

Other details:
Requires consistently moist soil; do not let dry out between waterings

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:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By Todd_Boland
Thumbnail #1 of Trillium grandiflorum by Todd_Boland

By Shadyfolks
Thumbnail #2 of Trillium grandiflorum by Shadyfolks

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

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

This showy, clump-forming trillium is the easiest to grow, reaching 12-18" in height. The pure white flowers, borne in spring, fade to pink as they age. The double-flowered white form, 'Flore Pleno', is beautiful but rare, and has arching stems and oval, dark green leaves.
Zones 3-9



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