<i>Achillea </i>plant named ‘Bosachskyye’

Abstract

A new and distinct cultivar of Achillea plant named ‘Bosachskyye’, characterized by its upright and uniform plant habit; vigorous growth habit; freely branching habit; freely flowering habit; inflorescences with bright yellow-colored ray florets; and good garden performance.

Claims

1. A new and distinct Achillea plant named ‘Bosachskyye’ as illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPH

(1) The accompanying photograph illustrates the overall appearance of the new Achillea plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Achillea plant. The photograph is a top perspective view of a typical flowering plant of ‘Bosachskyye’ grown in a container.

DETAILED BOTANICAL DESCRIPTION

(2) The aforementioned photograph and following observations and measurements describe plants grown during the late summer in 17-cm containers in an outdoor nursery in Aalsmeer, The Netherlands and under cultural practices typical of commercial Achillea production. During the production of the plants, average daily temperatures were 22° C. and average night temperatures were 17° C. Plants were 15 weeks old when the photograph and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, Second Edition, except where general terms of ordinary dictionary significance are used. Botanical classification: Achillea millefolium ‘Bosachskyye’. Parentage: Female, or seed, parent.—Achillea millefolium ‘Desyel’, disclosed in U.S. Plant Pat. No. 22,369. Male, or pollen, parent.—Achillea millefolium ‘Surprising Cherry’, not patented. Propagation: Type.—Terminal vegetative cuttings. Time to initiate roots, summer.—About 16 days at temperatures about 26° C. Time to initiate roots, winter.—About three weeks at temperatures about 23° C. Time to produce a rooted cutting, summer.—About 24 days at temperatures about 23° C. Time to produce a rooted cutting, winter.—About four weeks at temperatures about 18° C. Root description.—Medium in thickness, fibrous; typically white to light yellow 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.—Moderately freely branching habit; medium density. Plant description: Plant and growth habit.—Perennial plant appropriate as a container or garden plant; upright and uniform plant habit; vigorous growth habit; rapid growth rate; freely basal branching habit with about 24 basal branches developing per plant. Plant height.—About 51 cm. Plant diameter or spread.—About 45 cm. Lateral branches.—Length: About 46 cm. Diameter: About 4 mm. Internode length: About 4.5 cm. Aspect: Upright to about 30° from vertical. Strength: Strong. Texture and luster: Pubescent; glossy. Color, developing and developed: Close to 144A. Leaf description: Arrangement.—Alternate, simple; sessile. Length.—About 1.5 cm. Width.—About 1 cm. Shape.—Overall, oblong; feathery and fern-like. Apex.—Acute. Base.—Truncate. Margin.—Deeply and finely dissected, pinnatisect; lobes divergent. Texture and luster, upper and lower surfaces.—Pubescent; glossy. Venation pattern.—Pinnate. Color.—Developing leaves, upper surface: Close to 137A. Developing leaves, lower surface: Close to 138A. Fully expanded leaves, upper surface: Close to 137A; venation, close to 148D. Fully expanded leaves, lower surface: Close to 138A; venation, close to 148D. Inflorescence description: Arrangement and habit.—Rotate composite inflorescence form; inflorescences arranged in terminal or axillary compound corymbs; corymbs are slightly rounded; freely flowering habit with about 222 inflorescences per terminal corymb and about 5,328 inflorescences per plant; corymbs positioned above the foliar plane and face mostly upright. Fragrance.—Faint; pleasant. Time to flower.—Plants flower during June and July in The Netherlands; inflorescences not persistent. Inflorescence buds.—Height: About 5 mm. Diameter: About 2 mm. Shape: Ovoid. Texture and luster: Smooth, glabrous; glossy. Color: Close to 144A. Corymb diameter.—About 8 cm. Corymb height.—About 5 cm. Inflorescence diameter.—About 7 mm. Inflorescence height.—About 6 mm. Disc diameter.—About 4 mm. Receptacle diameter.—About 1 mm. Receptacle height.—About 1 mm. Receptacle shape.—Rounded, button-shaped. Receptacle color.—Close to 143A. Ray florets.—Quantity and arrangement: About five in a single whorl; ray florets face outwardly. Length: About 2 mm. Width: About 4 mm. Shape: Obovate. Apex: Emarginate. Base: Cordate. Margin: Mostly entire, distally, crenate; slightly undulate. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Color: When opening, upper surface: Close to 42B; towards the base, close to 12A. When opening, lower surface: Close to 12D. Fully opened, upper surface: Close to 12A; at the apex, occasionally tinged with close to 42D; venation, close to 12A; color does not change with subsequent development. Fully opened, lower surface: Close to 12C; venation, close to 12C; color does not change with subsequent development. Disc florets.—Quantity and arrangement: About 22 massed at the center of the receptacle. Length: About 5 mm. Diameter: About 1 mm. Shape: Tubular; apex, five-pointed. Texture and luster; upper and lower surfaces: Smooth, glabrous; matte. Color, when developing, upper and lower surfaces: Close to 9A. Color, fully developed, upper and lower surfaces: Close to 9A; color does not change with subsequent development. Phyllaries.—Quantity and arrangement: About 14 arranged in about three whorls; imbricate and tightly appressed to the ray florets. Length: About 4 mm. Width: About 2 mm. Shape: Elliptic. Apex: Acute. Base: Cuneate. Margin: Entire. Texture and luster, upper and lower surfaces: Pubescent; glossy. Color, upper and lower surfaces: Close to 144A. Peduncles.—Length, terminal peduncle: About 3 mm. Diameter, terminal peduncle: About 2 mm. Length, third peduncle: About 2 mm. Diameter, third peduncle: About 2 mm. Strength: Moderately strong. Aspect, terminal peduncle: Erect. Aspect, third peduncle: About 50° from vertical. Texture and luster: Pubescent; semi-glossy. Color: Close to 144A. Pedicels.—Length: About 2 mm. Diameter: About 1 mm. Strength: Flexible. Aspect: About 45° from vertical. Texture and luster: Pubescent; semi-glossy. Color: Close to 144A. Reproductive organs.—Androecium (present on disc florets only): Quantity: About five. Filament length: About 1 mm. Filament color: Close to 144A. Anther shape: Narrowly oblong; basifixed. Anther size: About 0.1 mm by 1 mm. Anther color: Close to 13A. Pollen amount: Abundant. Pollen color: Close to 13A. Gynoecium (present on disc and ray florets): Quantity: One. Pistil length: About 5 mm. Stigma diameter: About 1 mm. Stigma shape: Bi-parted. Stigma color: Close to 144A. Style length: About 4 mm. Style color: Close to 144B. Ovary color: Close to 145D. Seeds and fruits.—To date, seed and fruit production has not been observed on plants of the new Achillea. Pathogen & pest resistance: To date, plants of the new Achillea have not been shown to be resistant to pathogens and pests common to Achillea plants. Garden performance: Plants of the new Achillea have been observed to have good garden performance and tolerate wind, rain and to tolerate temperatures ranging from about −37° C. to about 35° C. and to be suitable for U.S.D.A. Hardiness Zone 3 and higher.