Dahlia plant named ‘Dahlgr152’

Abstract

A new and distinct cultivar of Dahlia plant named Dahlgr152, characterized by its upright, mounding and dense plant habit; freely basal branching habit; dark green-colored leaves; early and freely flowering habit; single-type inflorescence form; large inflorescences with light purple and white bi-colored ray florets; and good postproduction longevity and garden performance.

Claims

1. A new and distinct Dahlia plant named Dahlgr152 as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) The accompanying photographs illustrate the overall appearance of the new Dahlia plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Dahlia plant.

(2) The photograph on the first sheet comprises a side perspective view of a typical flowering plant of Dahlgr152 grown in an outdoor nursery.

(3) The photograph on the second sheet is a close-up view of typical inflorescences of Dahlgr152.

DETAILED BOTANICAL DESCRIPTION

(4) The photographs and following observations and measurements describe plants grown during the late summer and early autumn in ground beds in an outdoor nursery in Lisse, The Netherlands and under cultural practices typical of commercial Dahlia production. During the production of the plants, day temperatures ranged from 15 C. to 30 C. and night temperatures ranged from 10 C. to 20 C. Plants were pinched one time about two to three weeks after planting. Plants were three months old when the photographs were taken and four months old when the description was taken. 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. Botanical classification: Dahlia hybrida Dahlgr152. Parentage: Female, or seed, parent.Unidentified seedling selection of Dahlia hybrida, not patented. Male, or pollen, parent.Unknown selection of Dahlia hybrida, not patented. Propagation: Type.By vegetative cuttings. Time to initiate roots, summer.About 12 days at soil temperatures about 15 C. and air temperatures ranging from about 15 C. to 25 C. Time to initiate roots, winter.About 13 to 14 days at soil temperatures about 15 C. and air temperatures ranging from about 15 C. to 25 C. Time to produce a rooted young plant, summer.About 20 days at soil temperatures about 15 C. and air temperatures ranging from about 20 C. to 25 C. Time to produce a rooted young plant, winter.About 21 days at soil temperatures about 15 C. and air temperatures ranging from about 20 C. to 25 C. Root description.Fine, fleshy. Rooting habit.Moderately freely branching; dense. Tubers.Length: About 16 cm. Diameter: About 15 cm. Texture: Corky. Color: Typically white to brown in color, actual color of the roots is dependent on substrate composition, water quality, fertilizer type and formulation, substrate temperature and physiological age of roots. Plant description: Plant and growth habit.Upright and mounding plant habit; suitable as container and garden plants; inverted triangular plant form; freely basal branching with about six to seven primary lateral branches developing per plant each with about four secondary lateral branches; dense and bushy appearance; inflorescences held above the foliar plane on strong peduncles; vigorous growth habit. Plant height, soil level to top of foliar plane.About 55 cm. Plant height, soil level to top of floral plane.About 60 cm. Plant diameter or spread.About 35 cm. Lateral branches.Length: About 15 cm to 35 cm. Diameter: About 6 mm to 12 mm. Internode length: About 4 cm to 12 cm. Texture and luster: Smooth, glabrous; semi-glossy. Strength: Strong. Aspect: Erect to outwardly. Color: Close to 146A; distally tinged with close to 187A. Leaf description: Arrangement.Opposite, simple or compound with three or five leaflets per leaf. Leaf length, simple leaves.About 23 cm. Leaf width, simple leaves.About 16 cm. Leaflet length.About 6 cm. Leaflet width.About 3 cm. Shape, simple leaves or leaflets.Ovate. Apex, simple leaves or leaflets.Aristulate. Base, simple leaves or leaflets.Attenuate. Margin, simple leaves or leaflets.Serrate; sinuses medium in depth and divergent. Venation pattern, simple leaves or leaflets.Pinnate, reticulate. Texture and luster, upper surface, simple leaves or leaflets.Smooth, glabrous; semi-glossy. Texture and luster, lower surface, simple leaves or leaflets.Smooth, glabrous; matte. Color.Developing leaves or leaflets, upper surface: Somewhat darker than 139A. Developing leaves or leaflets, lower surface: Close to 191A. Fully expanded leaves or leaflets, upper surface: Close to 139A; venation, close to 139A. Fully expanded leaves or leaflets, lower surface: Close to 191A; venation, close to 187B. Petioles.Length, simple leaves or leaflets: About 6 cm. Diameter, simple leaves or leaflets: About 5 mm. Strength: Strong. Texture and luster, upper and lower surfaces, simple leaves or leaflets: Smooth, glabrous; matte. Color, simple leaves or leaflets, upper surface: Close to 187A. Color, simple leaves or leaflets, lower surface: Close to 200D. Inflorescence description: Appearance and flowering habit.Single-type inflorescences with ray and disc florets developing acropetally on a receptacle; inflorescences positioned above and beyond the foliar plane on strong peduncles; inflorescences face upright to outwardly; freely flowering habit with typically more than 35 to 40 inflorescences developing per plant during the flowering season. Fragrance.None detected. Time to flower.Early flowering habit; plants begin flowering about 70 days after planting; flowering continuous during the late summer and autumn in The Netherlands. Post-production longevity.Good postproduction longevity; inflorescences maintain good substance for about ten to twelve days on the plant and for about four to five days as a cut flower; inflorescences persistent. Inflorescence buds.Height: About 2 cm. Diameter: About 1.8 cm. Shape: Oblate. Texture and luster: Smooth, glabrous; semi-glossy to glossy. Color: Mid-section, close to 178A; towards the apex, close to 71A; at the base, close to 147A. Inflorescence diameter.Large, about 10.8 cm. Inflorescence depth (height).About 2.3 cm. Disc diameter.About 2.6 cm. Receptacle height.About 2.4 cm. Receptacle diameter.About 2.4 cm. Receptacle color.Close to 146A. Ray florets.Number of ray florets per inflorescence: About eight arranged in a single whorl. Length: About 5.2 cm. Width: About 3.1 cm. Shape: Ovate, flat. Apex: Obtuse or mucronulate. Base: Attenuate. Margin: Entire. Aspect: Initially upright to roughly perpendicular to the peduncle. Texture and luster, upper surface: Smooth, glabrous; semi-glossy to velvety. Texture and luster, lower surface: Smooth, glabrous; matte. Color: When opening, upper surface: Close to 77A. When opening, lower surface: Close to 77A; at the base, close to 77B. Fully opened, upper surface: Distally, close to 75A; proximally, close to 155B; at the base, close to 14A; venation, similar to lamina colors; color does not change with development. Fully opened, lower surface: Close to 77B; towards the margins, close to 77C. Disc florets.Number of disc florets per inflorescence: About 120 arranged in about 18 whorls. Length: About 1.6 cm. Diameter: About 2 mm. Shape: Tubular; apex dentate, pentafid. Aspect: Mostly upright. Texture and luster: Smooth, glabrous; matte. Color: When opening, inner surface: Close to 185A. When opening, outer surface: Close to 2C. Fully opened, inner surface: Close to 15A; venation, close to 15A. Fully opened, outer surface: Close to 168B; venation, close to 168B. Phyllaries.Quantity per inflorescence: About five arranged in a single whorl. Length: About 1.5 cm. Width: About 5 mm. Shape: Ovate to lanceolate. Apex: Acute. Base: Attenuate. Margin: Entire. Texture and luster, upper surface: Smooth, glabrous; glossy. Texture and luster, lower surface: Smooth, glabrous; semi-glossy. Color, upper surface: Close to 200A. Color, lower surface: Close to 200B. Peduncles.Length, terminal peduncle: About 30 cm. Diameter, terminal peduncle: About 6 mm. Length, third peduncle: About 20 cm. Diameter, third peduncle: About 3 mm. Strength: Strong. Aspect: Mostly erect to 30 from vertical. Texture and luster: Smooth, glabrous; semi-glossy. Color: Close to 200B. Reproductive organs.Androecium, present on disc florets only: Quantity per disc floret: Five. Filament length: About 5 mm. Filament color: Close to 2B. Anther size: About 2 mm by less than 1 mm. Anther shape: Lanceolate. Anther color: Close to 17C. Pollen amount: Moderate. Pollen color: Close to 21A. Gynoecium, present on disc florets only: Quantity per floret: One. Stigma diameter: About 2 mm. Stigma shape: Lanceolate. Stigma color: Close to 11B. Style length: About 7 mm. Style color: Close to 1C. Ovary color: Close to 1D. Seeds: Seed development has not been observed on plants of the new Dahlia to date. Disease & pest resistance: Plants of the new Dahlia have not been shown to be resistant to pathogens and pests common to Dahlia plants to date. Garden performance: Plants of the new Dahlia have exhibited good tolerance to rain and wind and have been observed to tolerate temperatures from about 0 C. to about 35 C.