Hydrangea plant named 'HMUPSI'

Abstract

A new and distinct Hydrangea cultivar named ‘HMUPSI’ is disclosed, characterized by a vibrant mophead inflorescence and strong re-blooming characteristics. Plants are semi-dwarf, compact and bloom on both old and new wood Flowering stems are exceptionally strong. The new variety is a Hydrangea, normally produced as an ornamental plant for containers or gardens.

Claims

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

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

[0028] The accompanying photograph in FIG. 1 illustrates in full color a typical flowering plant of ‘HMUPSI’ grown in a greenhouse in Grand Haven, Mich., USA.

[0029] FIG. 2 illustrates in full color a close up view of multiple inflorescence. Inflorescences towards the right side of the figure show the more violet tones of plants produced in a more basic environment. Inflorescences towards the left are more pink, produced in a more acidic environment. Age of the plant photographed is approximately 2-3 years. The photographs were taken using conventional techniques and although colors may appear different from actual colors due to light reflectance it is as accurate as possible by conventional photographic techniques.

DETAILED BOTANICAL DESCRIPTION

[0030] In the following description, color references are made to the 1996 Royal Horticultural Society Colour Chart except where general terms of ordinary dictionary significance are used. The following observations and measurements describe ‘HMUPSI’ plants grown in a double layered poly greenhouse, in Grand Haven, Mich., USA. The growing temperature ranged from approximately 18° C. to 27° C. daytime and 5° to 10° C. at night. Measurements and numerical values represent averages of typical plant types. Measurements were taken during July of 2015. [0031] Botanical classification: Hydrangea hybrida ‘HMUPSI’. [0032] Propagation: [0033] Time to initiate roots.—Approximately 18 days at approximately 27° C. [0034] Time to produce a rooted young plants.—Approximately 60 days at approximately 27° C. [0035] Root description.—Thick and fine, freely root branching and dense, fibrous. [0036] Propagation method.—Softwood cuttings. [0037] Plant: [0038] Age of plant described.—2 to 3 years. [0039] Pot size.—3 gallon. [0040] Growth habit.—Flowering perennial shrub, round. Semi-upright, non-climbing. [0041] Overall plant shape.—Round. [0042] Height.—58 cm. [0043] Plant spread.—91 cm. [0044] Growth rate.—Good. [0045] Plant vigor.—Good. [0046] Branching characteristics.—Opposite, basal branches, some pinching required. Non-fasciated. [0047] Length of lateral branches/stems.—Approximately 43 cm. [0048] Number of lateral branches.—28. [0049] Diameter of lateral branches.—6 mm. [0050] Lateral branch shape and appearance.—Round. [0051] Lateral branch strength.—Good. [0052] Internode length.—Average 7 cm. [0053] Branch/stem color.—Immature: Near RHS Yellow-Green 145B. [0054] Branch/stem texture.—Glabrous, lenticels not observed. Mature: Near RHS Yellow-Green 145B. [0055] Branch angle.—0 to 20°. [0056] Branch pubescence.—No. [0057] Foliage: [0058] Leaf.—Arrangement: Opposite. Average Length: 16 cm Average Width: 10 cm Shape of blade: Ovate, without lobes. Apex: Acuminate, average length 3 to 6 mm. Base: Rounded to obtuse Margin: Serrate Texture and appearance of top surface: Leathery, glossy Texture and appearance of bottom surface: Glossy, coarse. Color: Solid, non-variegated. Young foliage upper side: Near RHS Yellow-green 144A Young foliage under side: Near RHS Yellow-green 146B Mature foliage upper side: Near RHS Green 137A Mature foliage under side: Near RHS Yellow-green 146B Venation: Type: Pinnate Venation color upper side: Near RHS Yellow-green 145B Venation color under side: Near Yellow-green 145C. [0059] Petiole.—Average Length: 3.0 cm Diameter: 4 mm Color: Upper side: Near RHS Yellow-green 145B Under side: Near RHA Yellow-green 145B Texture upper side: Glossy, glabrous Texture under side: Glossy, glabrous. [0060] Flower: [0061] Bloom period.—Natural Season: Early Summer until Fall. [0062] Inflorescence.—Type: Mophead Shape: Globular. Quantity of flowers per inflorescence: Fertile flowers, 90 approximate average, inconspicuous to slightly inconspicuous. Sterile Flowers, 414 approximate average. Persistent or self-cleaning: Self-cleaning Fragrance: Lightly scented. [0063] Panicle.—Shape: Spherical, somewhat flattened Height: 6 cm Diameter: 15 cm. [0064] Sterile flower.—Bud shape: Obovate Bud length: 5.0 mm Bud diameter: 2.0 mm Bud color: Acidic: Near RHS Red-Purple 73C. Basic: Near RHS Violet-Blue 98B Flower aspect: Upright and outward Flower shape: Cruciform Flower length: 12 mm Flower Diameter: 18 mm Flower Depth: 12 mm Aspect: Facing upright and outward. Self cleaning. [0065] Sterile flower petals.—Petal Arrangement: Whorl Length of petal: Approximately 2 mm Width of petal: Approximately 1 mm Apex: Acute Shape of petal: Ovate Petal margin: Entire Petal Base: Obtuse/fused Petal Number: 4 Petal Texture: Smooth, upper and under side. [0066] Color.—Upper surface at first opening: Acidic: Near RHS Red-Purple 73C. Basic: Near RHS Violet-Blue 98B Upper surface at maturity: Acidic: Near RHS Red-Purple 73C. Basic: Near RHS Violet-Blue 98B Under surface at first opening: Acidic: Near RHS Red-Purple 73C. Basic: Near RHS Violet-Blue 98B Under surface at maturity: Acidic: Near RHS Red-Purple 73C. Basic: Near RHS Violet-Blue 98B. Color when fading: Both upper and lower surfaces continue with same coloration: Acidic: Near RHS Red-Purple 73C. Basic: Near RHS Violet-Blue 98B. [0067] Sterile flower sepal.—Arrangement: Whorl Number: 4 Shape: Obovate Tip: Acute or obtuse Base: Cuneate Margin: Entire Length: 8 mm Width: 8 mm to 10 mm Texture, Upper: Smooth Texture, Lower: Smooth Color: Upper surface at first opening: Acidic: Near RHS Purple-violet 81D and Violet-Blue 98A around margin Basic: Near RHS Red-purple 73B Upper surface at maturity: Acidic: Near RHS Purple-violet 81D and Violet-Blue 98A around margin Basic: Near RHS Red-purple 73B Under surface at first opening: Acidic: Near RHS Purple-violet 81D and Violet-Blue 98A around margin Basic: Near RHS Red-purple 73B Under surface at maturity: Acidic: Near RHS Purple-violet 81D and Violet-Blue 98A around margin Basic: Near RHS Red-purple 73C Fading to Upper surface: Acidic: Near RHS Purple-violet 81D and Violet-Blue 98A around margin Basic: Near RHS Red-purple 73D Fading to Under surface: Acidic: Near RHS Purple-violet 81D and Violet-Blue 98A around margin Basic: Near RHS Red-purple 73D. [0068] Sterile flower pedicel.—Length: 14 mm Diameter: 1 mm Angle: Upright and outward Strength: Good Texture: Smooth Color: Acidic: Near RHS Red-Purple 73D Basic: Near RHS Purple-Violet 81D. [0069] Fertile flower.—Bud shape: Round to obovate Bud length: 2 mm Bud diameter: 2 mm Bud color: Acidic: Near RHS Red-Purple 73C Basic: Near RHS Violet-Blue 98B Flower aspect: Upright and outward. Flower shape: Star-like, single. Flower length: 5 mm Flower diameter: 4 mm Flower depth: 5 mm Self-cleaning. [0070] Fertile flower petals.—Length of petal: 2 mm Width of petal: 1 mm Apex: Acute Shape of petal: Ovate Petal margin: Entire Petal Arrangement: Whorl Petal Number: 5 Petal base: Rounded/obtuse Petals Fused: No. Petal Texture: Smooth, upper and under side Color: Upper surface at first opening: Acidic: Near RHS Red-Purple 73C Basic: Near RHS Violet-Blue 98B Upper surface at maturity: Acidic: Near RHS Red-Purple 74D Basic: Near RHS Red-Purple 74D Under surface at first opening: Acidic: Near RHS Purple 76B Basic: Near RHS Purple 76B Under surface at maturity: Acidic: Near RHS Red-Purple 66D Basic: Near RHS Red-Purple 66D Upper surface fading to: Acidic: Near RHS Red-Purple 74D, fading towards margin to 74C Basic: Near RHS Red-Purple 74D, fading towards margin to 74C Lower surface fading to: Acidic: Near RHS Red-Purple 75D, fading towards margin to 75B Basic: Near RHS Red-Purple 75D, fading towards margin to 75B. [0071] Fertile flower sepal.—Arrangement: Whorl Number: 4 Shape: Deltate Tip: Acute Base: Ovate Margin: Entire Length: 1 mm Width: 0.5 mm Texture, Upper: Smooth Texture, Lower: Smooth Color, same for both acidic and basic conditions: Upper surface at first opening: Near RHS Purple 75B Upper surface at maturity: Near RHS Purple 75B, blended with 75A Under surface at first opening: Near RHS Purple 75C Under surface at maturity: Near RHS Purple 75C, blended with 75B Upper surface fading to: Near RHS Purple 75B, outwardly changing to 75A Lower surface fading to: Near RHS Purple 75C, outwardly changing to 75B. [0072] Fertile flower pedicel.—Angle: 15-90° Strength: Good Length: 2.8 mm Width: 2.0 mm Texture: Smooth. Color, same basic or acidic: Near RHS Yellow-Green 145C, blended with Red-Purple 73C. [0073] Reproductive organs: [0074] Sterile flower.—Androecium: Stamen number: 4 to 6 Filament length: 1 mm Filament color: Near RHS White 155A Anther shape: Round Anther color: Not accurately measurable with R.H.S. chart. Anther length: less 1 mm Pollen amount: Scant Pollen color: Not accurately measurable with R.H.S. chart. Gynoecium: Occurs in some flowers Pistil number: 1 Pistil length: 1 mm Stigma shape: Lobed Stigma color: Near RHS Red-Purple 74C Style length: 1 mm Style color: Near RHS Red-purple 74C Ovary color: Near RHS White 155B. [0075] Fertile flower.—Stamen number: 5 Filament length: Average 2.75 mm Filament color: Near RHS White 155A Anther shape: Oblong and irregularly lobed. Anther length: 1 mm Anther color: Near RHS Greyed-green 197D Pollen amount: Scant Pollen color: Near RHS White 155B Gynoecium: Pistil number: 1 Pistil length: 5 mm Stigma shape: Lobed Stigma color: Red-Purple 74C Style length: 2 mm Style color: Near RHS Red-Purple 74C Ovary color: Near RHS White 155D. [0076] Other characteristics: [0077] Disease resistance.—Neither resistance nor susceptibility to diseases or pests has been observed in this variety. [0078] Cold tolerance.—31° C. to 38° C. [0079] Fruit/seed production.—1000 s of seeds. Seeds very small, dust-like. Too minute to measure accurately with an R.H.S. chart.