<i>Hydrangea </i>plant named ‘SMNHRL’

Abstract

A new and distinct cultivar of Hydrangea plant named ‘SMNHRL’ is disclosed, characterized by large, mophead inflorescences with red-pink flowers, and dark green foliage. Sepals open a vivid green, turning whitish-green. Plants are vigorous with upright habits. The new variety is a Hydrangea, typically produced as an outdoor ornamental plant.

Claims

1. A new and distinct cultivar of Hydrangea plant named ‘SMNHRL’ as herein illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) ‘SMNHRL’ is illustrated by the accompanying photographs which show the plant's form, foliage, and inflorescences. The colors shown are as true as can be reasonably obtained by conventional photographic procedures. 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 hybrid Hydrangea. Age of the plants photographed is between 2 to 3 years.

(2) FIG. 1 shows a field grown plant of ‘SMNHRL’ grown outdoors in Grand Haven, Mich. at about 2.5 years of age.

(3) FIG. 2 shows the mature inflorescence of a field grown plant of ‘SMNHRL’, grown in Grand Haven, Mich.

(4) FIG. 3 shows the immature inflorescence of a field grown plant of ‘SMNHRL’, grown in Grand Haven, Mich.

DETAILED BOTANICAL DESCRIPTION

(5) In the following description, color references are made to The Royal Horticultural Society Colour Chart 2015, except where general terms of ordinary dictionary significance are used. The following observations and measurements describe ‘SMNHRL’ plants grown outdoors in Grand Haven, Mich. The plants were about 2 to 3 years old. Temperatures ranged from 5° C. to 10° C. at night to 18° C. to 27° C. during the day. No artificial light, photoperiodic treatments were given to the plants. Measurements and numerical values represent averages of typical plant types. Botanical classification: Hydrangea arborescens subsp. radiata ‘SMNHRL’.

PROPAGATION

(6) Typical method: Softwood cuttings. Root initiation: Approximately 18 days. Roots: Thick, fine, fibrous, moderately dense. White and brown in color, not accurately measured with R.H.S. chart.

PLANT

(7) Growth habit: Upright, slightly outwards. Height: 90 cm. Plant spread: 105 cm. Pot size of plant described: #3 container. Age of plant described: Approximately 2 to 3 years. Growth rate: Strong. Plant vigor: Quite vigorous. Stem: Branching.—Freely branching. Shape.—Round. Color.—Immature: RHS Yellow-Green 145A to Yellow-Green 144B. Mature: RHS Brown N200A. Length.—80 cm. Width.—5 mm. Texture.—Pubescent on new growth. Internode length.—5 to 12 cm.

FOLIAGE

(8) Leaf: Arrangement.—Opposite. Shape.—Ovate. Length.—9 cm. Width.—7 cm. Apex.—Acuminate. Base.—Cordate/obtuse. Margin.—Denticulate. Texture of top surface.—Coriaceous. Texture of bottom surface.—Coriaceous with pronounced venation. Pubescence.—On both sides, predominantly along veins and mid-rib. Color.—Young foliage upper side: RHS Green NN137B. Young foliage under side: RHS Greyed-Green 191A. Mature foliage upper side: RHS Green NN137B. Mature foliage, upper side: RHS Greyed-Green 191A. Venation: Type.—Pinnate. Color.—Upper side: RHS Yellow-Green 145A. Under side: RHS Yellow-Green 145B-C. Petiole: Length.—3.5 cm. Width.—2 mm. Color.—Upper side: RHS Yellow-Green 145A, with tinges of Greyed-Orange 177A. Under side: RHS Yellow-Green 145A. Texture.—Upper side: Lightly pubescent. Under side: Lightly pubescent.

INFLORESCENCE

(9) Natural flowering season: Summer. Quantity of flowers: About 2500 flowers and flower buds per plant. Inflorescence type: Mophead. Panicle: Shape.—Umbel. Height.—7 cm. Diameter.—18 to 20 cm. Fragrance: Sweet, perfume-like. Sterile flowers: Flowers per inflorescence.—Around 600. Aspect.—Upright. Shape.—Round whorl. Length.—1.5 cm. Diameter.—1.5 cm. Depth.—2 mm. Persistent or self-cleaning.—Persistent. Bud: Length.—2 mm. Bud diameter.—2 mm. Bud shape.—Round. Bud color.—RHS Greyed-Red 182B-C. Petals: Number per flower.—4. Arrangement.—Cruciform. Shape.—Elliptic. Tip.—Acute. Base.—Cuneate. Margin.—Entire. Length.—1.25 mm. Width.—1 mm. Texture.—Upper side: Smooth. Under side: Smooth. Color.—When Opening, Upper side: RHS Red-Purple 69C. When Opening, Under side: RHS Red-Purple 69C. Fully Opened, Upper side: RHS Red-Purple 69C. Fully Opened, Under side: RHS Red-Purple 69C. Sepal: Number.—4 to 5. Arrangement.—Cruciform/whorl. Shape.—Ovate. Tip.—Acute. Base.—Obtuse. Margin.—Entire. Length.—6 mm. Width.—7 mm. Texture.—Upper side: Smooth. Under side: Smooth. Color.—When Opening, Upper side: RHS Yellow-Green 144B. When Opening, Under side: RHS Yellow-Green 144C. Fully Opened, Upper side: RHS Yellow-Green 144D, fading to 150C near margins. Fully Opened, Under side: RHS Yellow-Green 144D. Pedicle: Length.—1.5 cm. Diameter.—1 mm. Angle.—45°. Strength.—Good, flexible. Texture.—Smooth, slightly pubescent. Color.—RHS Yellow-Green 144D. Fertile flowers: Flowers per inflorescence.—Around 1000. Aspect.—Upright. Shape.—Round whorl. Length.—5 mm. Diameter.—5 mm. Depth.—2 mm. Persistent or self-cleaning.—Self-cleaning. Bud: Length.—2 mm. Bud diameter.—2 mm. Bud shape.—Round. Bud color.—RHS Greyed-Red 182B-C. Petals: Number per flower.—5. Arrangement.—Whorl. Shape.—Elliptic. Tip.—Acute. Base.—Cuneate. Margin.—Entire. Length.—1.25 mm. Width.—1 mm. Texture.—Upper side: Smooth. Under side: Smooth. Color.—When Opening, Upper side: RHS Red-Purple 69C. When Opening, Under side: RHS Red-Purple 69C. Fully Opened, Upper side: RHS Red-Purple 69C. Fully Opened, Under side: RHS Red-Purple 69C. Sepal: None. Pedicel: Length.—2 mm. Diameter.—1 mm. Angle.—45°. Strength.—Good, flexible. Texture.—Smooth, slightly pubescent. Color.—RHS Yellow-Green 144D.

REPRODUCTIVE ORGANS

(10) Sterile flower: Stamens: Number.—4 to 5. Filament color.—RHS White NN155A. Filament length.—2 mm. Anthers: Length.—1 mm. Shape.—Rounded, dithecal, basifixed. Color.—RHS Red 36B. Pollen.—Moderate. Pollen color.—Near RHS Red 36D. Pistil: Number.—1. Length.—2 mm. Stigma: Length.—1 mm. Shape.—Bi-lobed. Color.—RHS White NN155A. Style length.—1 mm. Style color.—RHS White NN155A. Fertile flower: Stamen: Number.—Around 10. Filament length.—4 mm. Filament color.—RHS White NN155A. Anther: Shape.—Rounded, dithecal, basifixed. Length.—1 mm. Color.—RHS Red 36B. Pollen amount.—Some. Pollen color.—Near RHS Red 36D. Pistil: Number.—1. Length.—2 mm. Stigma: Shape.—Bi-lobed. Color.—RHS White NN155A. Style length.—1 mm. Style color.—RHS White NN155A. Other: Fertile flower petals shed readily.

OTHER CHARACTERISTICS

(11) Disease resistance: Neither resistance nor susceptibility to the normal diseases and pests of Hydrangea has been observed. Temperature tolerance: Typically USDA Zones 5 through 9. Fruit/seed production: Not observed to date.