Coreopsis plant named ‘Curry Up’

Abstract

The new and distinct threadleaf coreopsis plant, Coreopsis verticillata plant named ‘Curry Up’, with narrowly-linear, deeply-dissected, typically 3 to 5-lobed foliage of gray-green, numerous flowers of clear golden yellow petals with dark red eyes over a prolonged flowering season from early summer until late summer.

Claims

1. The new and distinct cultivar of Coreopsis plant named ‘Curry Up’ as described and illustrated and useful as a specimen landscape plant, mass planting or cut flower.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The color drawings illustrate the overall characteristics of Coreopsis ‘Curry Up’ as a three-year-old plant. The colors are as true as reasonably possible given the technology available. The color values may vary slightly depending on light intensity and quality.

(2) FIG. 1 shows the new plant in a landscape environment.

(3) FIG. 2 shows a close-up of the flowers of the new plant.

DETAILED BOTANICAL DESCRIPTION

(4) The following description is based on a three-year-old plant growing in a full-sun trial garden in Zeeland, Mich., USA. Environmental conditions for the growing season daytime temperatures range between 12-30° C., and night temperatures range between 6-19° C. Except for ordinary dictionary color usage, color references are according to The Royal Horticultural Society Colour Chart, 2001 edition. Parentage: Female or seed parent HK10-06-01 (not patented); male or pollen parent unknown. Asexual propagation: Cuttings, about 10 to 14 days to initiate roots; time to finish as # 1 field grown size about 9 months. Plant habit: Dense axillary branches; rounded, herbaceous perennial mound; up to 72 cm wide and 52 cm tall; average about 60 cm across and 42 cm tall. Leaves: Opposite, entire, glabrous; deeply dissected, irregularly lobed, typically tri to penta-lobed, acute apex; base attenuate; sessile; up to 11.5 cm long and 10.5 mm wide, average about 5.5 cm long and 5.5 cm wide; lobes to 6.5 cm long and 3.0 mm across. Leaf color: Young expanding leaves adaxial nearest RHS 137B and abaxial nearest RHS 137C; mature leaves adaxial nearest RHS 137A, abaxial nearest RHS 137B. Veins: Pinnate; only abaxial midvein obvious. Abaxial midveins color: Same as surrounding leaf. Flower: Composite consisting of ray and disk florets; on terminal branches; about 4.0 cm diameter, about 1.2 cm tall from lower involucral bracts to top of disk florets; attitude upright to outwardly. Flower fragrance: Not detected. Phyllary: Sepals in two distinct whorls, outer or lower set consisting of about ten, acute apex, narrowly deltoid, truncate base, glabrous, to about 3.2 mm long and 1.5 mm wide at base; inner or upper set tight against ray petals, usually eight in number, about 5.0 mm long and about 3.5 mm wide, deltoid to ovate; acute apex and truncate base. Phyllary color: Lower set nearest RHS 137A on both surfaces with lighter margin of nearest RHS 145D; upper set nearest RHS 144A in proximal and central portion of both abaxial and adaxial, marginally and distally nearest RHS 26A. Flowering period: Early summer until late summer, for about 10 weeks; producing over 40 flowers per stem and over 200 flowers per plant. Flower longevity: 4 to 6 days. Flower buds: One to two days before showing ray petal color spherical with slightly flattened top, 4.0 mm wide and 5.0 mm tall. Flower bud color: Base nearest RHS 137A and apex nearest RHS 163A. Stem: Terete; glaucous, thin, wiry, upright attitude, strong, many branched; 4.0 mm wide at base and 33.0 cm long; about seven nodes, average internode spacing about 4.7 cm. Stem color: Nearest RHS 138A. Peduncle: Terete; glaucous, thin, wiry, strong; average about 0.5 mm in diameter, 3.0 cm long. Peduncle color: Nearest RHS 138A. Pedicel: Absent. Ray florets: Imperfect; staminate. Ligule: Usually 8 per flower; oblong elongate, glabrous; apex typically two-notched, margin entire; base narrowly cuneate to attenuate; opening nearly flat to form about 180° angle; parallel veined; glabrous adaxial and adaxial; about 2.0 cm long and about 8.0 mm wide; basal corolla tube about 1.5 mm to 3.0 mm long and about 0.8 mm diameter; lacking stamens and pistils. Ligule color: Adaxial basal one-third nearest RHS 53A, adaxial distal two-thirds nearest RHS 15A; abaxial nearest RHS 14B with greyed-orange undertones of nearest RHS 176C in basal one-third. Disk florets: 20 to 40 per head; consisting of fused petal tube; perfect; size about 6.0 mm long by 1.0 mm wide at top. Petals.—Five; 5 mm long and 1 mm wide, fused in the basal 4 mm, acute apex. Petal color.—Adaxial nearest RHS 187B distally and between RHS 151D and RHS 153D proximally, abaxial nearest RHS 175B distally and nearest RHS 161B proximally. Staminal tube.—Made up of five fused stamens, 3 to 4 mm long. Anther.—About 1 mm long, nearest RHS N186A. Pollen.—Fine, round, closest to RHS 23A. Style.—About 5.0 mm long; nearest RHS 160C at base, between RHS 22A and RHS 22B distally. Stigma.—Split in half and curling back as it matures; color nearest RHS 21A. Seed: Linear with slight curve, with acute apex and truncate base; glabrous abaxial and adaxial surfaces, margin ciliolate; about 4.5 mm long, about 1.7 mm across and about 0.5 mm thick. Seed color: Variable, nearest RHS 202A. Coreopsis verticillata ‘Curry Up’ is tolerant of winter temperatures as low as −20° C. and summer temperatures as high as 40° C. Once established it is also tolerant of dry summer conditions but does best with ample moisture and good drainage. It is not known to be resistant of diseases and pest that are common to other Coreopsis cultivars.