Hybrid tea rose plant named ‘KORclagran’

A new and distinct variety of hybrid tea rose plant, referred to by its cultivar name, ‘KORclagran’, is described. The new variety forms in abundance on a substantially continuous basis attractive, wine-red colored blossoms. The vegetation is vigorous, and the growth habit is very bushy and upright. Attractive glossy, medium green foliage is formed. Additionally, the new variety is particularly well suited for growing as distinctive ornamentation in the landscape.

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

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR

The first offer for sale of the new variety was June 2023, in Germany. The first offer for sale of the new variety was by the inventor or another who obtained the new variety directly or indirectly from the 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 the inventor.

BACKGROUND OF THE INVENTION

The new variety of hybrid tea rose plant of the present invention was created by controlled breeding in May 2011, 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 variety was the ‘ADHarman’ variety (not patented). The male parent (i.e., the pollen parent) of the new variety was an unnamed breeder seedling (not patented).

The parentage of the new variety can be summarized as follows:

‘ADHarman’ x unnamed breeder seedling

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

SUMMARY OF THE INVENTION

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

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

The new variety can be readily distinguished from its ancestors. More specifically, the new variety provides a rounder, more nostalgic flower shape, and more petals compared to flowers of the ‘ADHarman’ variety (i.e., the seed parent). Additionally, the new variety produces a single blossom per stem, whereas the unnamed breeder seedling parent (i.e., the pollen parent) produces blossoms in clusters. Moreover, the new variety can be readily distinguished from non-parental related similar varieties. For example, the new variety displays a higher petal count, a more rounded, nostalgic flower shape and a wine-red flower color compared to the pure red flower color of the ‘KORcoluma’ variety (U.S. Plant Pat. No. 17,047).

The new variety has been named the ‘KORclagran’ variety.

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 and The R.H.S. Colour Chart designation used herein represents the closest color observed on the majority of the specified botanical feature. The description is based on a one-year-old specimen of the new variety, observed during August, while growing in a one-gallon container on its own roots in a nursery in Cochranville, Pennsylvania.

The new ‘KORclagran’ 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.