Species Orchid, Epipactis, Chatterbox Orchid, 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
Helleborine gigantea
Peramium giganteum
Serapias gigantea
Sun Exposure
Light Shade
Foliage
Smooth
Height
12-18 in. (30-45 cm)
Spacing
4-6 ft. (1.2-1.8 m)
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)
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)
Bloom Color
Chartreuse (yellow-green)
Brown/Bronze
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; germinate in vitro in gelatin, agar or other medium
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

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

Calabasas, California

Chico, California

Paradise, California

Grand Junction, Colorado

Kalamazoo, Michigan

Las Vegas, Nevada

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Gardener's Notes:

1
positive
1
neutral
0
negative
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I
Denver, CO | June 2006 | positive

But will grow in full sun with enough water, no kidding.
I am suprised by the toughness of this as an orchid, very impressive.
...Read More

B
B
Baa
| August 2001 | neutral

Epipactis gigantea is a native of the southwestern US which spreads via rhizomes. It has bright green lance shaped leaves and flo...Read More

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