Species Orchid, Epipactis, Giant Helleborine, Giant Stream Orchid

Epipactisgigantea

Family
Orchidaceae (or-kid-AY-see-ee)
Genus
Epipactis (ep-ih-PAK-tiss)
Species
gigantea (jy-GAN-tee-uh)
Synonym
Amesia gigantea
Arthrochilium giganteum
Epipactis americana
Epipactis pringlei
Helleborine giganteum
Sun Exposure
Full Sun
Foliage
Grown for foliage
Deciduous
Good Fall Color
Height
18-24 in. (45-60 cm)
Spacing
15-18 in. (38-45 cm)
Hardiness
USDA Zone 7b: to -14.9 °C (5 °F)
Danger
N/A
Bloom Color
Chartreuse (yellow-green)
Medium Purple
Brown/Bronze
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Dark/Black
Where to Grow
Can be grown as an annual
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
By simple layering
By air layering
By tip layering
By stooling or mound layering
Seed Collecting
Regional

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

Albany, California

Eureka, California

Oakland, California

Kalamazoo, Michigan

Lake Oswego, Oregon

Portland, Oregon

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Gardener's Notes:

1
positive
0
neutral
0
negative
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Portland, OR | June 2008 | positive

This plant is a great hardy orchid for those interested in growing such plants. In the wild it grows next to streams in sunny breaks in ...Read More

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