Astilbe plant named ‘Harvandermeerrubyred’

Abstract

A new and distinct cultivar of Astilbe plant named Harvandermeerrubyred, characterized by its tall, broadly upright and mounding plant habit; vigorous growth habit; dark green-colored leaves; freely and uniformly flowering habit; dark red purple-colored flowers on upright and strong peduncles; and good container and garden performance.

Claims

1. A new and distinct Astilbe plant named Harvandermeerrubyred as illustrated and described.

Description

DETAILED BOTANICAL DESCRIPTION

(1) The aforementioned photographs and following observations, measurements and values describe plants grown during the spring and early summer in 19-cm containers in an outdoor nursery in Nieuwe Wetering, The Netherlands and under cultural practices typical of commercial Astilbe production. During the production of the plants, day temperatures ranged from 25 C. to 30 C. and night temperatures ranged from 15 C. to 20 C. Plants were one year old when the photographs and description were taken. 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 classification: Astilbe chinensis Harvandermeerrubyred. Parentage: Female, or seed, parent.Astilbe chinensis Harvandermeer, not patented. Male, or pollen, parent.Unknown Astilbe chinensis seedling selection, not patented. Propagation: Type.By vegetative divisions. Time to initiate roots.About three weeks at temperatures about 20 C. Root description.Thick, fleshy; typically brown in color, actual color of the roots is dependent on substrate composition, water quality, fertilizer type and formulation. Rooting habit.Freely branching; dense. Plant description: Plant form and growth habit.Herbaceous perennial; tall, broadly upright and mounding plant form with inflorescences held above the foliar plane; flowering stems and leaves basal; freely flowering with numerous basal branches developing per plant, dense and bushy; vigorous growth habit; and freely and uniformly flowering habit. Growth rate.Rapid; from divisions, about six months are required to produce fully-grown flowering plants in containers. Plant height (soil level to top of foliar plane).About 51 cm. Plant height (soil level to top of inflorescences).About 87.9 cm. Plant width (spread).About 92.5 cm. Stem description.Length: About 46.5 cm. Diameter: About 3.5 mm. Internode length: About 18 cm. Strength: Strong. Aspect: Erect to about 5 from vertical. Texture and luster: Moderately pubescent; glossy. Color, developing: Close to 152B to 152C. Color, developed: Close to between 145A and 152A. Leaf description: Arrangement.Alternate; biternately compound; about 39 leaflets per leaf. Leaf length (excluding petiole).About 30.6 cm. Leaf width.About 34.8 cm. Terminal leaflet length.About 7.4 cm. Terminal leaflet width.About 4.1 cm. Lateral leaflet length.About 5.3 cm. Lateral leaflet width.About 2.9 cm. Leaflet shape.Elliptic. Leaflet apex.Apiculate. Leaflet base.Attenuate. Leaflet margin.Biserrate. Leaflet texture and luster, upper and lower surfaces.Moderately pubescent; slightly rugose; slightly glossy. Leaflet venation pattern.Pinnate. Leaflet color.Developing leaflets, upper surface: Close to between 137B and 146B. Developing leaflets, lower surface: Close to 146B. Fully expanded leaflets, upper surface: Close to NN137A; venation, close to 144B. Fully expanded leaflets, lower surface: Close to 147B; venation, close to 145A to 145B. Leaf petiole length.About 40.7 cm. Leaf petiole diameter.About 2.75 cm. Leaf and leaflet petiole strength.Strong. Leaf and leaflet petiole texture and luster, upper and lower surfaces.Moderately pubescent; glossy. Leaf and leaflet petiole color, upper surface.Close to 144A and 199A; at the nodes, close to 178B to 178C. Leaf and leaflet petiole color, lower surface.Close to 144B and 199A to 199B; at the nodes, close to 152A. Flower description: Flower type and flowering habit.Single rotate flowers arranged on terminal compound panicles; flowers face upright, outward or downward depending on position on the inflorescence; panicles narrowly conical in shape; freely and uniformly flowering habit with about 1,500 flowers developing per inflorescence. Fragrance.Moderate; sweet and pleasant. Natural flowering season.Plants begin flowering about 13 weeks after planting; continuously flowering from late spring until late summer in The Netherlands. Postproduction longevity.Flowers last about ten days on the plant; flowers not persistent. Flower buds.Height: About 2 mm. Diameter: About 1.75 mm. Shape: Roughly globular. Texture and luster: Smooth, glabrous; matte. Color: Close to 59D fading towards the base to close to 146D. Inflorescence height.About 37.1 cm. Inflorescence diameter.About 11.2 cm. Flower diameter.About 1 cm. Flower depth.About 7 mm. Petals.Quantity per flower: Typically five in a single whorl. Length: About 6 mm. Lobe width: About 0.6 mm. Shape: Oblanceolate. Apex: Narrowly acute. Base: Narrowly cuneate. Margin: Entire. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Color: Developing petals, upper and lower surfaces: Close to 59B. Fully expanded petals, upper and lower surfaces: Close to 64B fading towards the base to close to 64C; color becoming closer to 64C with development. Sepals.Quantity per flower: Typically five in a single whorl, fused towards the base forming a campanulate-shaped calyx. Length: About 2.5 mm. Width: About 1 mm. Shape: Broadly ovate. Apex: Acute. Base: Cuneate, fused. Margin: Entire. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Color: Developing sepals, upper surface: Close to 62C; towards the margins, close to 63A. Developing sepals, lower surface: Close to 62C; towards the margins, close to 64C. Fully expanded sepals, upper surface: Close to 62D; towards the margins, close to 63B. Fully expanded sepals, lower surface: Close to 62D; towards the margins, close to 64D. Peduncles.Length: About 36.8 cm. Diameter: About 2.5 mm. Angle: Mostly erect. Strength: Strong. Texture and luster: Densely pubescent; slightly glossy. Color: Close to 152B. Pedicels.Length: About 0.75 mm. Diameter: About 0.5 mm. Angle: About 60 from peduncle axis. Strength: Moderately strong. Texture and luster: Moderately to densely pubescent; matte. Color: Close to 59D. Reproductive organs.Stamens: Quantity per flower: Typically twelve; anthers basifixed. Filament length: About 4 mm. Filament color: Close to 64C. Anther shape: Broadly ovate. Anther length: About 0.5 mm. Anther diameter: About 0.2 mm. Anther color: Close to 75D. Pollen amount: Moderate. Pollen color: Close to 76C. Pistils: Quantity per flower: Two. Pistil length: About 3 mm. Stigma diameter: About 0.1. mm. Stigma shape: Club-shaped. Stigma color: Close to 64B. Style length: About 2.75 mm. Style color: Close to 64C. Ovary color: Close to 64C. Seeds and fruits.To date, seed and fruit development have not been observed on plants of the new Astilbe. Pathogen & pest resistance: To date, plants of the new Astilbe have not been noted to be resistant to pathogens and pests common to Astilbe plants. Garden performance: Plants of the new Astilbe have been observed to have good garden performance and tolerate rain, wind and high temperatures of about 35 C. Additionally, plants of the new Astilbe have been observed to be suitable for USDA Hardiness Zones 5 through 10.