(12) United States Plant Patent

(10) Patent N0.:


US PP20,774 P2

(45) Date of Patent:

Feb. 23, 2010




US. Cl. .................................................... .. Plt./353


Latin Name.


Field of Classi?cation Search ................. .. Plt./353

Hosta hybrid“

Varietal Denomination; (76)




Empress Wu

See application ?le for complete search history.

Brian Skaggs, 13620 W. 173 Ave.,

Prlmary ExammeriKem L Ben

Lowell, IN (US) 46356-9495


Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U_S_C_ 154(1)) by 0 days_

Hosta plant named ‘Empress Wu’ is a new cultivar with very

large green leaves, gigantic plant stature in the landscape, light lavender ?owers and large matching bracts producing a

(21) Appl. N0.: 12/313,138 _





Int. Cl. A01H 5/00


water lily effect, suitable as a potted plant, for the garden, and

NOV‘ 17’ 2008

for out ?ower arrangements.


2 Drawing Sheets



Botanical classi?cation: Hosta hybrida (Tratt.) Variety denomination: ‘Empress Wu’

4. Each ?ower and bud is subtended by a large bract of a

matching light lavender color producing a water-lily ?ower appearance while still in bud.


The present invention relates to the new and distinct hosla

plant, Hosta ‘Empress Wu’ hybridized and developed by Brian Skaggs andVirginia Skaggs in Lowell, Ind., USA as the

The photographs of the new plant demonstrate the overall

appearance of the mature plant, including the unique traits,

result of a sel?ng of Hosta ‘Big John’ (not patented). The

plant has been successfully asexually propagated by division

grown in a partially shaded garden in Lowell, Ind. The colors 10

in Lowell, Ind. and also by tissue culture at a nursery in Zeeland, Mich. and in both systems found to be stable and

produce identical plants that maintain the unique character istics of the original plant.

FIG. 2 shows a close-up of the foliage. FIG. 3 shows the foliage ?ower scape. FIG. 4 shows the ?ower scape at bud stage with the water


lily ?ower effect.

Hosta ‘Empress Wu’ differs from its parent, ‘Big John’, as well as all other hoslas known to the applicant. The most


similar known hosla cultivars: ‘T Rex’ (not patented), ‘Ela

tior’ (not patented), ‘Vim andVigor’ (not patented) and Hosta

The following descriptions and color references are based on the 2001 edition of The Royal Horticultural Society

monlana macrophylla (not patented) are all green cultivars with large foliage and landscape stature. The new plant is larger than all of these in both leaf and plant habit. ‘T Rex’ has

Colour Chart except where common dictionary terms are

used. The new plant, Hosta ‘Empress Wu’, has not been

a more rounded leaves with deeper veining, more corrugation

observed under all possible environments. The phenotype may vary slightly with different environmental conditions, such as temperature, light, fertility, moisture and specimen maturity, but without any change in the genotype. The fol lowing observations and siZe descriptions are of a six-year old plant in a garden in Lowell, Ind. in a lightly shaded landscape with supplemental water and light fertilizer. Botanical classi?cation: Hosta hybrid;

while the ?owers are much lighter in color (near white), and the plant is slower growing. ‘Elatior’ has a much lighter green

leaf, lighter colored ?owers and longer arching scapes. ‘Vim and Vigor’ has a smaller leaf and habit, medium lavender

?owers and the scape is longer and arching. The species Hosta monlana macrophylla generally has a smaller cascad ing leaf with a more acutely pointed apex and is much slower

growing. There are over 3,800 cultivars registered with The Ameri can Hosta Society, which is the International Cultivar Regis tration Authority for the genus Hosta. Hosta ‘Empress Wu’ differs from these and all unregistered cultivars known to the inventor in the following combined traits:

1. Huge foliage starting off with slight glaucous surface and becoming dull to slightly shiny. 2. Extremely large landscape stature. 3. Tightly compact light lavender ?owers on short scapes

just above foliage.

are as accurate as reasonably possible with color reproduc tions . Ambient light spectrum, source, direction and tempera ture may cause the appearance of minor variation in color. FIG. 1 shows the new plant in a landscape setting.

Parentage: Hosta ‘Big John’ (not patented) times ‘Big John’; 35

Propagation method: by sterile laboratory tissue culture divi sion and garden division; Growth rate: rapid; Crop time: summer growing 8 to 9 weeks to ?nish in a

one-liter container; 40

Time to initiate roots from tissue culture about two weeks;

Plant description: Plant shape and habiLiHardy, herbaceous, upright as juvenile and mounded in maturity, forming perennial

US PP20,774 P2 4

3 With basal rosette leaves, usually bilateral and radially

PeduncleiUsually one per division, erect to slightly

symmetrical, spreading by rhizomes; RoomiNormal, ?eshy, lightly branching, cream-col

arching, about 8 mm diameter at base, average 130 cm

tall, some bending and staying partially beloW foli

ored in normal soil; Plant sizeiFoliage height of a mature plant at ?oWer ing that Was six-year old is about 120 cm tall; tallest measured foliage is about 128 cm; Width of plant at the Widest point is approximately 275 cm at the Widest

age; RHS N138B; Gynoeciumisingle; Style: about 7.0 cm long, 1 mm diameter, curled upWard at distal 1.0 cm; lighter than RHS 155D; Stigma: 1 mm to 2 mm in diameter,

lighter than RHS 155D;

point; Foliage description:

AndroeciumiFilaments: six, about 1 .0 mm in diameter

and 7.5 cm long, curving upWard the last 1.5 cm;

Leaf blade.4Cordate leaf base With acute apex, mostly

lighter than RHS 155D;

bilaterally symmetrical, entire margins, mostly ?at

Amhemioblong; dehiscing along the center longitudi

blades With impressed veins; Width to length ratio of about 1:1.1; largest leaves about 71 cm long and 64.5

nal axis; about 6.0 mm long and 2.0 mm Wide, closest to RHS N77A; Pollen. ‘elliptical, less than 0.1 mm long, nearest RHS

cm Wide; average about 56 cm long and 51 cm Wide;

17 to 18 pairs of major parallel veins; top surface begins season slightly glaucous becoming dull matte surfaced to slightly shiny, and bottom surface is glau

13B; Bracmisubtending one or more ?oWers, sessile, lan ceolate, Widest at base and tapering to acute apex;

cous and tends to stay through most of the season;

Blade coloniAdaxial (top) darker than RHS 137A;

protruding upWard about 80 degree angle aWay from


scape; loWest up to 8.5 cm long and 1.5 cm Wide

abaxial (underside) nearest RHS 191A With a glau

before ?rst ?oWer, progressively decreasing in both

cous bloom;

length and Width;

Veins.*17 to 18 pairs of major parallel veins, deeply

Bracl colonilowest bracts nearest RHS 138B on top

impressed; same color as surrounding top and bottom

leaf surfaces;

and bottom surfaces in the terminal half and lighter than RHS 138D on the basal top portion and nearest


PeliolesiVariable With the petioles of center shoots

RHS 138C on the basal outer portion; the more distal

larger, 75 to 84 cm long, about 3.8 cm Wide measured at 7 cm above soil line; Peliole c0l0n4Outside of petiole nearest RHS 139D

With a slight glaucous surface; inside of petiole lighter than RHS 138D;


bracts quickly becoming more lavender tinted to becoming betWeen RHS 91C and RHS 91B; FruiLitri-dehiscent capsule, about 4 cm long and 7 mm

Wide; variable in color at dehiscence including: RHS 164B With more green or more yelloW;

FloWer description:

Seedsisingle Winged drupe, about 12 mm long and 3

BudsiClavate With bluntly acute apex and longer thin base; one day prior to opening nearest RHS 91D near base and RHS 92D at middle and apex; about 5.5 cm


mm Wide; about 30 per pod; black nearest RHS 202A; Disease resisZanceiSlug feeding on mature plants has

long, and 2.0 cm Wide at the broadest portion; Flowers. *30 to 40 per scape; tightly arranged With

not been noticed. Other disease or pest resistance beyond that common to hoslas has not been observed.

about 6 to 8 ?oWers per 1.0 cm centimeter of scape in some areas and spaced 1 cm apart in other areas;

moisture and adequate drainage, but is able to tolerate

funnelform; about 4.0 cm Wide and 7.0 cm long, (dis tal ?oWers opening smaller); remain open for a nor mal period, usually one to tWo days on or cut from

The plant groWs best With light fertiliZer, plenty of some ?ooding and drought When mature. Hardiness at least from USDA Zone 3 through 9, and other disease resistance is typical of that of other hoslas.


plant; scapes remain effective from early June into mid July in LoWell, lnd.; no detectable fragrance; TEPIILiTWO identical sets of three fused at the basal tWo


thirds; acute apex; margins entire; approximately 7.0 cm long and 2.0 cm Wide; tepal color nearest RHS 91D on outside and RHS 76C on the inside; veins on the inside nearest RHS 76C and on outside nearest

RHS 9 1 D; PediceLiApproximately 26 mm long, 2 mm Wide, betWeen RHS 138C and RHS 138 B With violet under



I claim: 1. A neW and distinct ornamental Hosla plant named ‘Empress Wu’ as herein described and illustrated, With very

large green leaves andplant stature, light lavender ?oWers and large matching bracts producing a Water lily effect, suitable as a potted plant, for the garden, and for cut ?oWer arrange ments.

U S. Patent

Feb. 23, 2010


Sheet 1 of2

US PP20,774 P2

U S. Patent

Feb. 23, 2010

Sheet 2 of2

US PP20,774 P2

Hosta plant named 'Empress Wu'

Feb 23, 2010 - Variety denomination: 'Empress Wu'. BACKGROUND OF THE INVENTION. The present invention relates to the new and distinct hosla plant, Hosta 'Empress Wu' hybridized and developed by. Brian Skaggs andVirginia Skaggs in Lowell, Ind., USA as the result of a sel?ng of Hosta 'Big John' (not patented).

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