Species Orchid, Kaki-ran, Persimmon Orchid, Helleborine, Thunberg's Epipactis

Epipactisthunbergii

Family
Orchidaceae (or-kid-AY-see-ee)
Genus
Epipactis (ep-ih-PAK-tiss)
Species
thunbergii (thun-BERG-ee-eye)
Synonym
Amesia thunbergii
Arthrochilium thunbergii
Helleborine chinensis
Helleborine thunbergii
Limodorum thunbergii
Sun Exposure
Sun to Partial Shade
Light Shade
Foliage
Deciduous
Height
18-24 in. (45-60 cm)
Spacing
15-18 in. (38-45 cm)
Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
Danger
N/A
Bloom Color
Gold (yellow-orange)
Bloom Time
Late Spring/Early Summer
Mid 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
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)
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

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

Saint Louis, Missouri

Bay Village, Ohio

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Glendale, MO | October 2011 | neutral

Epipactis thunbergii does flower nicely, ie 5-10 flowers per plant and does set abundant seed if cross pollinated by hand. The only trou...Read More

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