<i>Hydrangea </i>plant named ‘LC NO11’

Abstract

A new and distinct cultivar of Hydrangea plant named ‘LC NO11’, characterized by its upright to somewhat outwardly spreading and uniform plant habit; freely branching habit with strong lateral branches; early and freely flowering habit with plants remaining in flower for a long period time; dense and hardy inflorescences with large and durable white-colored sterile flowers; and good garden performance.

Claims

1. A new and distinct Hydrangea plant named ‘LC NO11’ as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) The accompanying colored photographs illustrate the unique appearance of the new Hydrangea 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 from the color values cited in the detailed botanical description which accurately describe the colors of the new Hydrangea plant.

(2) The photograph on the first sheet is a side perspective view of a typical flowering plant of ‘LC NO11’ grown in a container.

(3) The photographs on the second sheet are close-up views of typical leaves (top of sheet) and typical inflorescences (bottom of sheet) of ‘LC NO11’.

DETAILED BOTANICAL DESCRIPTION

(4) Plants used in the aforementioned photographs and in the following description were grown during the late summer in 21-cm containers in an outdoor nursery in Boskoop, The Netherlands and under cultural practices typical of commercial Hydrangea production. During the production of the plants, day temperatures ranged from about 16° C. to 35° C. and night temperatures ranged from about 12° C. to 22° C. Plants of the new Hydrangea were pinched one time and were two years old when the photographs and description were taken. As a Hardy or Panicled Hydrangea, plants of the new Hydrangea are typically not treated with aluminum sulfate to “blue” the inflorescences. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used. Botanical description: Hydrangea paniculata ‘LC NO11’. Parentage: Female, or seed, parent.—Hydrangea paniculata ‘Silver Dollar’, not patented. Male, or pollen, parent.—Hydrangea paniculata Fraise', not patented. Propagation: Type cutting.—By vegetative tip cuttings. Time to initiate roots, summer.—About 16 days at temperatures about 16° C. to 30° C. Time to produce a rooted young plant, summer.—About 120 days at temperatures about 16° C. to 30° C. Root description.—Medium in thickness, fibrous; typically light 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. Rooting habit.—Freely branching; dense. Plant description: Plant and growth habit.—Upright to somewhat outwardly spreading and uniform plant habit; overall plant shape, upright narrow inverted triangular; strong and sturdy stems; vigorous growth habit and moderate to high growth rate. Plant height.—About 79.6 cm. Plant diameter or area of spread.—About 58 cm. Lateral branch description: Branching habit.—About 14 lateral branches develop per plant; pinching enhances lateral branch development. Length.—About 49.2 cm. Diameter.—About 5 mm. Internode length.—About 5.6 cm. Texture.—When developing, moderately pubescent; fully developed, woody. Aspect.—Upright to about 15° from vertical. Strength.—Strong, sturdy. Color.—When developing: Upper surface, close to 199D; lower surface, close to 145B. Developed: Upper surface, close to 185D; lower surface, close to 187C; proximally, close to 200D; when woody, close to 199C and N199A. Lenticels.—Density: Sparse; none observed on developing stems. Size, developed stems: About 1.5 mm by 0.75 mm. Color, developed stems: Close to 165C. Leaf description: Arrangement.—Opposite or in whorls of three, simple. Length.—About 8.3 cm. Width.—About 5.2 cm. Shape.—Ovate. Apex.—Short apiculate. Base.—Rounded to short attenuate. Margin.—Serrate; coarsely undulate. Texture, upper surface.—Sparsely pubescent. Texture, lower surface.—Mostly sparsely pubescent; densely pubescent along midvein and lateral venation; slightly rough. Venation pattern.—Pinnate. Color.—Developing leaves, upper surface: Close to between 143A and 144A. Developing leaves, lower surface: Close to 146C. Fully developed leaves, upper surface: Close to between 138A and 143A; venation, close to 151A. Fully developed leaves, lower surface: Close to between 144A and 146B; venation, close to 193A. Petioles.—Length: About 1.5 cm. Diameter: About 2.5 mm. Texture and luster, upper surface: Sparsely pubescent; matte. Texture and luster, lower surface: Smooth, glabrous; matte. Color, upper surface: Close to 152D; towards the edges, close to 174B. Color, lower surface: Close to 145C to 145D. Flower description: Flower type and habit.—Showy sterile flowers and smaller inconspicuous fertile flowers arranged on terminal panicles; panicles dense and broadly conical in shape; sterile flowers face upright to outwardly and slightly drooping depending on their position in the inflorescence; fertile flowers face mostly upright. Fragrance.—None detected. Natural flowering season.—Flowering begins in the midsummer and is continuous until late summer in Northern Europe. Flower longevity.—Sterile flowers last about six weeks on the plant, sterile flowers persistent; fertile flowers last about five days on the plant, fertile flowers not persistent. Quantity of flowers.—Freely flowering habit; about 800 sterile flowers and about 225 fertile flowers per panicle. Panicle height.—About 21.1 cm. Panicle diameter.—About 15.7 cm. Sterile flower buds.—Length: About 5 mm. Diameter: About 1.2 cm. Shape: Broadly cup-shaped. Color: Close to 150D. Fertile flower buds.—Length: About 3 mm. Diameter: About 2.5 mm. Shape: Broadly obovate. Color: Close to 145D; immature calyx, close to 145C to 145D. Sterile flower diameter.—About 2.7 cm. Sterile flower depth (height).—About 6 mm. Fertile flower diameter.—About 7 mm. Fertile flower depth (height).—About 5 mm. Petals, sterile flowers.—Quantity and arrangement: Four or occasionally five arranged in a single whorl. Length: About 2.5 mm. Width: About 1.5 mm. Shape: Ovate, concave. Apex: Acute. Base: Cuneate. Margin: Entire. Texture and luster, upper surface: Smooth, glabrous; slightly glossy. Texture and luster, lower surface: Smooth, glabrous; matte. Color: When opening, upper and lower surfaces: Close to NN155A. Fully opened, upper and lower surfaces: Close to NN155C; color does not change with development. Petals, fertile flowers.—Quantity and arrangement: Five arranged in a single whorl. Length: About 3 mm. Width: About 1.75 mm. Shape: Ovate, concave. Apex: Acute. Base: Cuneate. Margin: Entire. Texture and luster, upper surface: Smooth, glabrous; slightly glossy. Texture and luster, lower surface: Smooth, glabrous; matte. Color: When opening and fully opened, upper surface: Close to NN155D; color does not change with development. When opening and fully opened, lower surface: Close to NN155B; color does not change with development. Sepals, sterile flowers.—Quantity and arrangement: Typically four or occasionally five arranged in a single whorl. Length: About 1.6 cm. Width: About 1.2 cm. Shape: Broadly elliptic to obovate and ovate, slightly concave. Apex: Shallowly emarginate to obtuse. Base: Attenuate. Margin: Entire. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Color: When opening, upper surface: Close to between 155C and 157D. When opening, lower surface: Close to 155C. Fully opened, upper surface: Close to between 155C and 157A; with subsequent development (at the end of the summer and beginning of autumn), color becoming closer to between 61D and 62B. Fully opened, lower surface: Close to 157A; with subsequent development (at the end of the summer and beginning of autumn), color becoming closer to 65D and towards the margins and apex, close to 62C. Sepals, fertile flowers.—Quantity and arrangement: Five in a single whorl. Length: About 1 mm. Width: About 1.5 mm. Shape: Broadly deltoid. Apex: Broadly acuminate. Base: Broadly cuneate. Margin: Entire. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Color: When opening, upper surface: Close to 145D. When opening, lower surface: Close to 145C to 145D. Fully opened, upper and lower surfaces: Close to 150D; color does not change with development. Pedicels, sterile flowers.—Length: About 2 cm. Diameter: About 1 mm. Strength: Moderately strong. Aspect: About 37.5° from branch axis. Texture and luster: Moderately to densely pubescent; matte. Color: Close to 157D. Pedicels, fertile flowers.—Length: About 2.5 mm. Diameter: About 0.5 mm. Strength: Moderately strong. Aspect: About 20° from vertical. Texture and luster: Densely pubescent; matte. Color: Close to 157C. Reproductive organs, sterile flowers.—Stamens: Quantity per flower: About eight. Filament length: About 2 mm. Filament color: Close to NN155D. Anther length: About 0.6 mm. Anther shape: Broadly oblong. Anther color: Close to 155D. Pollen amount: Scarce. Pollen color: Close to 161D. Pistils: To date, pistil development has not been observed on sterile flowers of plants of the new Hydrangea. Reproductive organs, fertile flowers.—Stamens: Quantity per flower: About ten. Filament length: About 3.5 mm. Filament color: Close to NN155B. Anther length: About 0.5 mm. Anther shape: Broadly oblong. Anther color: Close to 155D. Pollen amount: Scarce. Pollen color: Close to 161D. Pistils: Pistil quantity per flower: Typically three or occasionally two. Pistil length: About 1 mm. Stigma shape: Club-shaped. Stigma color: Close to 157D. Style length: About 0.5 mm. Style color: Close to 157D. Ovary color: Close to 150D. Seeds.—To date, seed production has not been observed on plants of the new Hydrangea. Pathogen & pest resistance: To date, under commercial production conditions, plants of the new Hydrangea have not been observed to be resistant to pathogens and pests common to Hydrangea plants. Garden performance:

(5) Plants of the new Hydrangea have been observed have good garden performance and to be suitable for USDA Hardiness Zones 5 through 9.