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Spiraea plant named `Wilma`
PP15397 Spiraea plant named `Wilma`
Patent Drawings:Drawing: PP15397-3    
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(1 images)

Inventor: Wood
Date Issued: December 7, 2004
Application: 10/232,890
Filed: August 31, 2002
Inventors: Wood; Timothy D. (Grand Haven, MI)
Assignee: Spring Meadow Nursery, Inc. (Grand Haven, MI)
Primary Examiner: Locker; Howard J.
Assistant Examiner:
Attorney Or Agent: Whealy; C. A.
U.S. Class: PLT/226
Field Of Search: PLT/226; PLT/263
International Class:
U.S Patent Documents:
Foreign Patent Documents:
Other References:

Abstract: A distinct cultivar of Spiraea plant named `Wilma`, characterized by its upright and rounded plant habit; freely branching growth habit; red-colored young leaves; freely flowering habit; vibrant pink-colored flowers; and excellent garden performance.
Claim: It is claimed:

1. A new and distinct cultivar of Spiraea plant named `Wilma`, as illustrated and described.
Description: Botanicalclassification/cultivar designation: Spiraea fritschiana cultivar Wilma.


The present Invention relates to a new and distinct cultivar of Spiraea plant, botanically known as Spiraea fritschiana, and hereinafter referred to by the cultivar name Wilma.

The new Spiraea originated from a cross-pollination during the spring of 1995 of two unidentified selections of Spiraea fritschiana, not patented. The cultivar Wilma was discovered and selected by the Inventor as a single plant within theprogeny of the stated cross-pollination in a controlled environment in East Lansing, Mich. The selection of the new Spiraea was based on its vibrant pink-colored flowers.

Asexual reproduction of the new cultivar by softwood cuttings taken at Grand Haven, Mich., since spring, 1997, has shown that the unique features of this new Spiraea are stable and reproduced true to type in successive generations.


Plants of the cultivar Wilma have not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of `Wilma`. These characteristics in combination distinguish `Wilma` as a new and distinct cultivar: 1. Upright and rounded plant habit. 2. Freely branching growth habit. 3. Red-colored young leaves. 4. Freely flowering habit. 5. Vibrant pink-colored flowers. 6. Excellent garden performance.

Plants of the new Spiraea are most similar to the parent selections and differ from plants of parent selections and other known selections of Spiraea fritschiana in the following characteristics: 1. Plants of the new Spiraea are more freelybranching than other known selections of Spiraea fritschiana. 2. Young leaves of plants of the new Spiraea are more red in color than young leaves of other known selections of Spiraea fritschiana. 3. Plants of the new Spiraea have largerinflorescences with more flowers per inflorescence than other known selections of Spiraea fritschiana. 4. Plants of the new Spiraea have pink-colored flowers whereas other known selections of Spiraea fritschiana have white-colored flowers.


The accompanying colored photographs illustrate the unique appearance of the new cultivar, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ from thecolor values cited in the detailed botanical description which accurately describe the colors of the new Spiraea.

The photograph at the top of the sheet comprises a side perspective view of a typical plant of `Wilma` grown in the landscape.

The photograph at the bottom of the sheet is a close-up view of inflorescences of a typical plant of `Wilma`.


In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used. Plants used in the aforementioned photographs and inthe following description were grown in Grand Haven, Mich., in ground beds in an outdoor nursery and under conditions which closely approximate commercial production conditions. Plants were about two years old when the photographs and description weretaken. The photographs and description were taken during the summer. Botanical classification: Spiraea fritschiana cultivar Wilma. Parentage: Male, or pollen, parent.--Unidentified Spiraea fritschiana selection, not patented. Female, or seed,parent.--Unidentified Spiraea fritschiana selection, not patented. Propagation: Type cutting.--By softwood cuttings. Time to initiate roots.--About 15 days at C. Time to produce a rooted cutting or liner.--About 60 days at C.Root description.--Fine, fibrous. Rooting habit.--Freely branching. Plant description: Form/growth habit.--Upright and rounded plant habit; bushy perennial shrub. Usage.--Appropriate for one to three-gallon containers. Plant height, soil level to topof plant plane.--About 76 cm. Plant diameter or area of spread.--About 90 cm. Branching habit.--When pinched, freely branching with potentially about 108 lateral branches per plant. Lateral branches.--Length: About 20 cm. Diameter: About 3 to 4 mm. Internode length: About 2 cm. Texture: Glabrous. Color: 143C. Foliage description.--Arrangement: Alternate, simple. Quantity per laterla branch: Typically about 17. Length: About 4 cm. Width: About 2.5 cm. Shape: Ovate. Apex: Acute. Base: Acuteto obtuse. Margin: Serrate. Texture: Upper surface: Glabrous. Lower surface: Slightly pubescent. Venation pattern: Pinnate. Color: Young foliage, upper and lower surfaces: 181A. Mature foliage, upper surface: 146B. Mature foliage, lower surface:146C. Venation, upper surface: Midrib, 144A; lateral veins, 146C. Venation, lower surface: All veins, 144A. Petiole: Length: About 2 mm. Diameter: About 1 mm. Color: 144A. Flower description: Flower type and habit.--Single rotate flowers arrangedon terminal corymbs; corymbs hemispherical. Flowers not persistent. Flowers not fragrant. Natural flowering season.--Continuously flowering from early to mid-June in Grand Haven, Mich. Flower longevity.--Flowers last about three to four weeks on theplant. Quantity of flowers.--Freely flowering, about 153 flowers per inflorescence. Corymb diameter.--About 10 cm. Corymb height.--About 8 cm. Flower diameter.--About 6 mm. Flower depth (height).--About 9 mm. Flower buds.--Length: About 1 mm. Diameter: About 1 mm. Shape: Spherical. Color: 186C. Petals.--Quantity per flower: About five. Length: About 2.5 mm. Width: About 2.5 mm. Shape: Rounded. Apex: Obtuse. Base: Obtuse. Margin: Entire. Texture, upper and lower surfaces: Smooth,glabrous. Color: When opening, upper and lower surfaces: 186D. Fully opened, upper and lower surfaces: 186D. Sepals.--Quantity per flower: About five. Length: About 1 mm. Width: Less than 1 mm. Shape: Ovate. Apex: Acute. Base: Attenuate. Margin:Entire. Texture, upper and lower surfaces: Smooth, glabrous. Color, upper and lower surfaces: 147D. Pedicels.--Angle: About 20 to from vertical. Strength: Moderately strong. Length: About 2 to 3 mm. Color: 147D. Reproductiveorgans.--Stamens: Quantity per flower: About 15. Anther shape: Filiform. Anther length: About 2.5 mm. Anther color: 186D. Pollen amount: Scarce. Pollen color: 57A. Pistils: Pistil quantity per flower: Five. Pistil length: About 1 mm. Stigmashape: Rounded. Stigma color: 186D. Style length: About 1 mm. Style color: 186D. Ovary color: 145B. Seed: Length: Less than 0.5 mm. Diameter: Less than 0.5 mm. Color: Close to 166A. Disease/pest resistance: Under commercial production conditions,plants of the new Spiraea have not been observed to be resistant to pathogens or pests common to Spiraea. Weather tolerance: Plants of the new Spiraea have been shown to be tolerant to temperatures ranging from -30 to C. Flowers of plantshave exhibited excellent tolerance to wind and rain.

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