Miniature rose plant named ‘KORpot145’

Abstract

A new and distinct variety of miniature rose plant, referred to by its cultivar name, ‘KORpot145’, is described. The new plant variety forms in abundance on a substantially continuous basis cream-white-colored blossoms. The growth habit is bushy and upright. Semi-glossy, dark green foliage is formed. Additionally, the new plant variety is particularly well suited for growing as distinctive ornamentation in the landscape.

Description

Latin name of genus and species of plant claimed: Rosa hybrida.

Variety denomination: ‘KORpot145’.

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR

The first sale or offer for sale of the new plant variety was February 2025, on the ROSA DANICA website. The first sale or offer for sale of the new plant variety was by a joint inventor or another who obtained the new variety directly or indirectly from a joint inventor. No plants of the new variety have been sold in this country or anywhere in the world, nor has any disclosure of the new plant been made, more than one year prior the effective filing date of this application, and such sale or disclosure within one year was either derived directly or indirectly from a joint inventor.

BACKGROUND OF THE INVENTION

The new variety of miniature rose plant of the present invention was created by controlled breeding in 2021 in Offenseth-Sparrieshoop, Germany by artificial pollination wherein two parents were crossed which previously had been studied in the hope that they would contribute the desired characteristics. The female parent (i.e., the seed parent) of the new plant variety was the ‘KORpot121’ variety (U.S. Plant Pat. No. 35,811). The male parent (i.e., the pollen parent) of the new plant variety was the ‘KORaroma02’ variety (not patented).

The parentage of the new plant variety can be summarized as follows:
‘KORpot121’ x ‘KORaroma02’

The seeds resulting from the above pollination were sown and small plants were obtained which were physically and biologically different from each other. Selective study resulted in the identification of a single plant of the new variety.

The new plant variety has been found to undergo asexual propagation at Klein Offenseth-Sparrieshoop, Germany by a number of routes such as vegetative cuttings. Asexual propagation techniques in Klein Offenseth-Sparrieshoop, Germany, such as vegetative cuttings, have shown that the characteristics of the new plant variety are homogeneous, stable, and strictly transmissible by such asexual propagation from one generation to another. Accordingly, the new plant variety undergoes asexual propagation in a true-to-type manner.

SUMMARY OF THE INVENTION

It was found that the new variety of miniature rose plant of the present invention possesses the following combination of characteristics:

• • (a) abundantly and substantially continuously forming cream-white-colored blossoms,
  • (b) exhibiting a bushy and upright growth habit, and
  • (c) forming semi-glossy, dark green foliage.

The new plant variety well meets the needs of the horticultural industry. It can be grown to advantage as distinctive ornamentation in parks, gardens, public areas, and residential landscapes. Accordingly, it is particularly well suited for growing in the landscape.

The new plant variety can be readily distinguished from its ancestors. More specifically, the new plant variety displays a larger flower size and larger foliage compared to the ‘KORpot121’ variety (i.e., the seed parent). Additionally, the new plant variety provides less fragrance and displays a stronger cream-white flower color compared to the ‘KORaroma02’ variety (i.e., the pollen parent), which displays a purer white flower color. Moreover, the new plant variety can be readily distinguished from non-parental related similar varieties. For example, the new plant variety displays a larger flower size and larger foliage compared to the ‘KORpot131’ variety (U.S. Plant Pat. No. 36,658).

The new plant variety has been named the ‘KORpot145’ variety.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photograph shows, as nearly true as it is reasonably possible to make the same in a color illustration of this character, a typical specimen of the new plant variety and blossoms of the new plant variety. The illustrated rose plant of the new variety was approximately twelve weeks of age and was grown indoors on its own roots in a 10.5 cm container in Klein Offenseth-Sparrieshoop, Germany on Dec. 19, 2024.

Drawing—illustrates a specimen of the plant displaying flowers at varying points of opening.

DETAILED BOTANICAL DESCRIPTION

The chart used in the identification of colors is that of The Royal Horticultural Society (The R.H.S. Colour Chart, 2015 edition). The terminology which precedes reference to the chart has been added to indicate the corresponding color in more common terms. The R.H.S. Colour Chart designation used herein represents the closest color observed on the majority of the specified botanical features. The description is based on a one-year-old specimen of the new variety, observed during January 2026, while growing on its own roots in a three-gallon container in a greenhouse in Cochranville, Pennsylvania.

• Botanical classification: Rosa hybrida cultivar ‘KORpot145’.
• Commercial classification: Miniature Rose.
• Plant:
  • • Habit.—Bushy and upright.
    • Height.—Approximately 40.0 cm on average from the top of the soil plane.
    • Width.—Approximately 30.0 cm on average.
• Branches:
  • • Stem color.—Old wood: Grey-Brown Group N199A. — young stems: Yellow-Green Group 144A.
    • Length.—Main stems: approximately 40.0 cm on average. — secondary stems: approximately 30.0 cm on average.
    • Diameter.—Main stems: approximately 1.0 cm on average. — secondary stems: approximately 5.0 mm on average.
    • Texture.—Smooth.
    • Prickles.—Amount: sparse; mostly seen on bottom half of plant. — young prickles: length is approximately 5.0 mm on average; width is approximately 3.0 mm on average at point of attachment; and color is Greyed-Orange Group N199C. — old prickles: length is approximately 8.0 mm on average; width is approximately 5.0 mm on average at point of attachment; and color is Brown Group 200D.
• Leaflets:
  • • Number.—3, 5, and 7.
    • Shape.—Ovate; apex is acute to acuminate; and base is cuneate.
    • Arrangement.—Odd-pinnate.
    • Margin.—Serrate.
    • Undulation.—Moderate.
    • Glossiness of upper side.—Semi-glossy.
    • Texture.—Upper surface: smooth. — under surface: smooth.
    • Venation pattern.—Reticulate.
    • Size.—Terminal leaflet: length is approximately 5.0 cm on average; width is approximately 3.3 cm on average. — lower leaflets: length is typically 4.0 cm to 4.5 cm; width is typically 2.3 cm to 3.0 cm. — 5-Leaflet leaf. length is approximately 11.5 cm on average; width is approximately 8.5 cm on average.
• Foliage:
  • • Young foliage.—Upper surface color: Green Group 137C with no visible venation. — under surface color: Green Group 137C with no visible venation.
    • Old foliage.—Upper surface color: Green Group 137A with no visible venation. — under surface color: Yellow-Green Group 147B with no visible venation.
    • Petiole.—Texture: upper surface is hispidulous; under surface is smooth. — length: approximately 1.7 cm on average. — width: approximately 1.0 mm on average. — upper surface color: Green Group 143A. — under surface color: Green Group 143C.
    • Rachis.—Length: approximately 2.3 cm on average. — width: approximately 1.0 mm on average. — upper surface color: Greyed-Orange Group 165A. — under surface color: Yellow-Green Group 146A.
    • Stipules.—Length: approximately 1.4 cm on average. — width: approximately 4.0 mm on average. — margin: entire to erose. — upper surface color: Green Group 143B. — lower surface color: Yellow-Green Group 144A.
• Inflorescence:
  • • Number of flowers.—About 25 to 30 blooms on average on a plant at once.
    • Number of blossoms per stem or in a cluster.—Typically between 1 and 5 blooms per stem on average.
    • Peduncle.—Color: Yellow-Green Group 144A. — diameter: approximately 2.0 mm on average. — length: approximately 4.0 cm on average. — surface texture: hispidulous.
    • Sepals.—Number: 5. — upper surface color and texture: Green Group 143A, covered in short pubescence. — under surface color and texture: Yellow-Green Group 147C, puberulent. — size: length is approximately 2.8 cm on average; width is approximately 1.0 mm on average. — margin: entire with extensions on most sepals measuring approximately 5.0 mm in length and 1.0 mm in width on average. — shape: lanceolate. — apex: acute to aristate. — base: truncate as it joins the receptacle.
    • Buds.—Shape: ovoid. — size: length is approximately 2.8 cm on average; width is approximately 1.4 cm on average. — color (when opening): Green-White Group 157C.
    • Flower.—Form: double, cuplike. — profile: concave as it opens, and then outer petals are convex as the bloom ages and opens further. — diameter: approximately 7.0 cm on average. — height: approximately 3.0 cm on average. — duration: on the plant approximately 10 to 12 days. — petal color when first and fully opened: upper surface is White Group 155A with a slight basal spot of Greyed-Yellow Group 160C; under surface is White Group 155A with a slight basal spot of Greyed-Yellow Group 160C. — petal color at end of bloom: upper surface is White Group 155C with no visible basal spot; under surface is White Group 155C with no visible basal spot. — petals reflex one by one: yes.
    • Fragrance.—No noticeable scent.
    • Petal.—Number: 30 to 35 on average. — drop: good. — length: approximately 4.0 cm on average. — width: approximately 3.0 cm on average. — overall shape: broadly obovate. — margin: entire with moderate undulation. — apex shape: rounded to slightly reniform. — base shape: cuneate. — texture: upper surface is smooth; under surface is smooth.
    • Petaloids number.—Approximately 5 on average. — length: approximately 1.8 cm on average. — width: approximately 1.0 cm on average. — color: upper surface is White Group 155A with a slight basal spot of Greyed-Yellow Group 160C; under surface is White Group 155A with a slight basal spot of Greyed-Yellow Group 160C. — texture: upper surface is smooth; under surface is smooth. — margin: entire with moderate undulation. — shape: obovate. — apex: obovate. — base: linear.
    • Stamen.—Number: approximately 95. — anthers: number is approximately 95; color is Greyed-Orange Group 165A; length is approximately 1.0 mm on average; and shape is oval. — filaments: length is approximately 6.0 mm on average and color is Greyed-Yellow Group 160A.
    • Pistils.—Arrangement: separate and free. — number: approximately 65.— style: length is approximately 7.0 mm on average and color is Greyed-Yellow Group 160B at apex and Brown Group 200B at base. — stigma: diameter is approximately 1.0 mm on average; shape is fan shaped; color is Greyed-Yellow Group 160B.
    • Receptacle.—Diameter: approximately 7.0 mm on average. — depth: approximately 9.0 mm on average. — shape: urn shaped. — color: Yellow-Green Group 144A. — surface texture: smooth.
    • Pollen.—None observed.
    • Hips/seed.—None observed.
• Development:
  • • Vegetation.—Semi-glossy and dark green.
    • Blossoming.—Abundant and substantially continuous from spring through frost; typically, in bloom outdoors from May to November in Southeastern Pennsylvania.
    • Resistance to diseases.—Good resistance to powdery mildew (Podosphaera pannosa).
    • Hardiness.—Unknown.

The new ‘KORpot145’ variety has not been observed under all possible environmental conditions to date. Accordingly, it is possible that the phenotypic expression may vary somewhat with changes in light intensity and duration, cultural practices, and other environmental conditions.

Claims

1. A new and distinct variety of miniature rose plant named ‘KORpot145’ characterized by the following combination of characteristics: substantially as herein shown and described.

(a) abundantly and substantially continuously forming cream-white-colored blossoms,

(b) exhibiting a bushy and upright growth habit, and

(c) forming semi-glossy, dark green foliage;