Hosta 'Krossa Regal'


Family: Liliaceae (lil-ee-AY-see-ee) (Info)
Genus: Hosta (HOSS-tuh) (Info)
Cultivar: Krossa Regal
Hybridized by Krossa-Krossa
Registered or introduced: 1980
» View all varieties of Hostas

Plant Size (check one):

Large (leaf 81-144 square inches; plant 18-28 tall)


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)

Sun Exposure:

Light Shade

Other details:

Unknown - Tell us

Patent Information:


Seed Collecting:

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

Growing Habit:


Growth Rate:


Leaf Shape:


Leaf Appearance:


Degree to which the appearance is present:


Leaf Texture (top):

Glaucous Bloom

Leaf Texture (bottom):

Glaucous Bloom

Leaf Substance:

1 (Thick)

Leaf Color:

Dark Green

Medium Blue-Green

Color of Leaf Margin:

No margin

Number of Vein Pairs:

12 to 15

Appearance of Margin:

Unknown - Tell us

Margin Width:

No margin

Bloom Time:


Flower Shape:


Flower Fragrance:

No fragrance

Does it set seed?:

No it does not set seed

Bloom Color:

Pale Lavender

Medium Lavender

Foliage Color:


Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round in hardiness zone

Can be grown as an annual


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

Montgomery, Alabama

Oxford, Connecticut

Bonifay, Florida

Atlanta, Georgia

Cordele, Georgia

Lawrenceville, Georgia

Marietta, Georgia

Caseyville, Illinois

Edwardsville, Illinois

Machesney Park, Illinois

Nilwood, Illinois

Greenville, Indiana

Olathe, Kansas

Louisville, Kentucky

Russell, Kentucky

Silver Spring, Maryland

Lexington, Massachusetts

Uxbridge, Massachusetts

Ann Arbor, Michigan

Grand Rapids, Michigan(2 reports)

Plainwell, Michigan

Royal Oak, Michigan

Anoka, Minnesota

Minneapolis, Minnesota

New Ulm, Minnesota

Lothair, Montana

Cape May Court House, New Jersey

Columbia, New Jersey

Jamesburg, New Jersey

Mount Laurel, New Jersey

Ithaca, New York

Elizabeth City, North Carolina

Pittsboro, North Carolina

Belfield, North Dakota

Medora, North Dakota

Cincinnati, Ohio

Glouster, Ohio

Salem, Oregon

Norristown, Pennsylvania

Pittsburgh, Pennsylvania

North Augusta, South Carolina

Rockwood, Tennessee

South Jordan, Utah

Broadway, Virginia

Kirkland, Washington(2 reports)

Augusta, Wisconsin

Dodgeville, Wisconsin

Eau Claire, Wisconsin

Lake Delton, Wisconsin

Marion, Wisconsin

Thiensville, Wisconsin

show all

Gardeners' Notes:


On Jan 1, 2016, coriaceous from ROSLINDALE, MA wrote:

One of my favorite hostas.

Wonderful majestic stance, regal indeed, with an unusual upright vaselike habit, broadening with age. The vaselike shape is best displayed on an elevation, up a bank from the viewer. Needs regular division or the outer leaves start to spread out more horizontally.

Like other blue hostas, it holds its glaucous color best in shade.

The pale mauve flowers are spaced far apart on the extremely tall gawky scapes, which generally reach 6'. I like most hosta flowers, but for Krossa Regal I cut the scapes before they emerge from the foliage.


On May 11, 2012, BadgerJim from Eau Claire, WI wrote:

Love the color, upright nature, easIly one of my favorites


On Apr 29, 2012, sandraky from Louisville, KY wrote:

Found it in a discount bin, has grown beautifully in part sun and deep shade. The one plant is now five.I have it next to a rue - it covers the ugly knees and matches the colour exactly, so the foliage shape contrast is highlighted.
One of my favorites


On Aug 6, 2011, dahlia10 from Ottawa,
Canada wrote:

A very fast grower for me.Huge,impressive and beautiful.Foliage stays lovely and best of all no slug damage!!!


On May 6, 2008, Gabrielle from (Zone 5a) wrote:

a.k.a. Hosta nigrescens 'Krossa Regal'


On Jan 27, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

A fast grower but a bit slow to spread. It look good in the middle of a medium to large hosta patch. It will held up its blue color through most of the year and will grow in woodland shade.


On Jul 10, 2007, Jennie_in_MT from Lothair, MT (Zone 4a) wrote:

In my garden on the border of zone 3/4, this hosta has been very reliable. It is not a fast grower, but it steadily increases.

The powdery blue color of the leaves and its upright, vase shape make it a nice contrast to the greener, lower hosta.


On Mar 2, 2005, northgrass from West Chazy, NY (Zone 4b) wrote:

This one is at the top of my list. Lovely blue color lasting late in the season if grown in part shade. Beautifully vase shaped. Even the blossoms look quite impressive, so tall.


On May 26, 2003, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Mine is not an especially fast grower, but I think that has to do with a shorter dormancy period here in the south. It has rich color and upright habit, making it a lovely counterpart to moundlike hostas.


On Oct 7, 2002, floragal wrote:

Although the foliage is lovely I cannot get my Krossa Regal to flower - one is in pretty deep shade and the other in moderate shade. Any answers?


On Sep 15, 2002, Bull70 wrote:

Part Sun Best


On May 7, 2002, lupinelover from Grove City, OH (Zone 6a) wrote:

Due to the upright growth of this variety, it almost never has had slug damage in any garden I have seen.

If grown in full shade, blue color remains through most of year.


On May 7, 2002, Greenwood from Bonifay, FL (Zone 8a) wrote:

Krossa Regal starts the season with powdery blue foliage by mid summer the vase shaped mound turns dark green. The flowering habits are notable with scapes 3' to 6' tall.