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PlantFiles: Hosta
Hosta clausa

Family: Liliaceae (lil-ee-AY-see-ee) (Info)
Genus: Hosta (HOSS-tuh) (Info)
Species: clausa (KLAW-suh) (Info)

» View all varieties of Hostas

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Plant Size (check one):
Medium (leaf 25-81 square inches; plant 10-18 tall)
Large (leaf 81-144 square inches; plant 18-28 tall)

36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

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)

Sun Exposure:
Light Shade
Partial to Full Shade
Full Shade

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

Patent Information:

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

Growing Habit:

Growth Rate:

Leaf Shape:

Leaf Appearance:

Degree to which the appearance is present:

Leaf Texture (top):
Slightly Shiny

Leaf Texture (bottom):
Slightly Shiny

Leaf Substance:
3 (Average)

Leaf Color:
Medium Green
Dark Green

Color of Leaf Margin:
Dark Green

Number of Vein Pairs:
Fewer than 9

Appearance of Margin:
Slightly Rippled

Margin Width:
No margin

Bloom Time:

Flower Shape:

Flower Fragrance:
No fragrance

Does it set seed?:
No it does not set seed

Bloom Color:
Deep Purple

Click thumbnail
to view:

By ViolaAnn
Thumbnail #1 of Hosta clausa by ViolaAnn

By bert
Thumbnail #2 of Hosta clausa by bert

By Frederiksen
Thumbnail #3 of Hosta clausa by Frederiksen

By ViolaAnn
Thumbnail #4 of Hosta clausa by ViolaAnn

By instig8r
Thumbnail #5 of Hosta clausa by instig8r


2 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive ViolaAnn On Aug 7, 2007, ViolaAnn from Ottawa, ON (Zone 5a) wrote:

My first Hosta - before I even knew what one was. I was calling it "unidentified green hosta" until I realized the flower buds never open. Enthusiastic grower, but not difficult to contain.

Positive PerryPost On Sep 9, 2005, PerryPost from Minneapolis, MN wrote:

Great groundcover hosta. We use it as a canvas in which to display heavier specimen hostas.

One drawback is that is probably the first hosta to lose its leaves in the cool-down of fall.

Neutral lmelling On Jan 11, 2005, lmelling from Ithaca, NY (Zone 5b) wrote:

Species: spreading mound of green foliage; closed purple flowers. Mound size 19" high by 45" wide (to 103" wide or more). Unusual and intriguiing because of its flowering habits, its rhizonmatious nature makes it a great ground cover.

Leaves are 7-1/2" long by 3-1/8" wide, dark green with a shiny top and underside. The blade is narrowly ovate to elliptic in shape with a slightly wavy margin and no corrugation. There are intense red-purple dots on petioles and average substance with 6-7 vein pairs.

Many flower scapes with purple red dots appear in August, with dark purple buds that remain closed until they drop; scapes run 30"-44" tall. There can be as many as 52 buds per scape; no seed pods. At the peak of bloom in August, a mature planting of Hosta clausa can be quite striking.

In spring, new shoots typically stretch 6-12" from the previous year's growth as the plant continues to spread.

Neutral jody On Jan 21, 2003, jody from MD &, VA (Zone 7b) wrote:

species, rhizomatous in nature. Flower scapes 30"-44".


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

Machesney Park, Illinois
Ames, Iowa
Louisville, Kentucky
Acton, Massachusetts
Muskegon, Michigan
Minneapolis, Minnesota
Moorhead, Minnesota
Coshocton, Ohio
Beaver Dam, Wisconsin

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