Chewgewest

Rose

Variety Description

Variety used for comparison: 'ChewNiceBell' (Oso Easy Italian Ice)

Summary: The leaf of 'Chewgewest' is large while that of 'ChewNiceBell' is medium sized. The entire leaflet of 'Chewgewest' is longer than that of 'ChewNiceBell'. The terminal leaf, flower diameter and petal of 'Chewgewest' is larger than that of 'ChewNiceBell'. The flower of 'Chewgewest' has a medium to strong fragrance while the flower of 'ChewNiceBell' has an absent or weak to medium fragrance. The colour group of the flower for 'Chewgewest' is an orange blend while it is a yellow blend for that of 'ChewNiceBell'. When newly opened, the inner side of the petal of 'Chewgewest' is orange with darker orange tones and light red pink at the marginal zone while that of 'ChewNiceBell' is yellow to light yellow with darker yellow at the marginal zone. When fully opened, the inner side of the petal of 'Chewgewest' is light yellow orange with orange tones while that of 'ChewNiceBell' is white with light blue pink at the marginal zone. The basal spot on the inner side of the petal of 'Chewgewest' is large while that of 'ChewNiceBell' is small to medium sized. The filament of the outer stamen of 'Chewgewest' is predominantly red while that of 'ChewNiceBell' is medium yellow.

Description:

PLANT: shrub type, semi-upright to intermediate growth habit, very weak to medium intensity of anthocyanin colouration of young shoot

YOUNG LEAFLET: weak to medium intensity of anthocyanin colouration along margins
LEAF: large, upper side dark green, no anthocyanin colouration, strong degree of glossiness of upper side, weak to medium undulation of margin
TERMINAL LEAFLET: medium elliptic shape, rounded base, acute apex

FLOWER BUD: medium ovate, red (RHS 43A) and darker red (RHS 45C) when closed, orange brown (RHS 33C) and light yellow (RHS 10A) when unfolding
FLOWER: double type, orange blend colour group, yellow centre, medium density of petals, irregularly rounded shape, flattened convex profile of upper part, concave profile of lower part, medium to strong fragrance, very weak sepal extensions
PETAL: reflexing of petals one-by-one, obocordate shape, weak incisions, strong reflexing of margin, medium undulation
PETAL (INNER SIDE): one colour lighter towards base (basal spot excluded), when newly opened orange (RHS 24B) with darker orange (RHS 25B) tones and light red pink (RHS 38B) at marginal zone, when fully opened light yellow orange (RHS 23C) with orange (RHS 24B) tones and light red pink (RHS 38B) at marginal zone of older petals
PETAL (OUTER SIDE): when newly opened yellow orange (RHS 16C) and light yellow (RHS 15D) with light yellow (RHS 10A) at base, when fully opened light yellow (RHS 11B) and yellow orange (RHS 16C) with light yellow (RHS 10A-B) at base
BASAL PETAL SPOT (INNER SIDE): large, medium yellow (RHS 12A-B)
OUTER STAMEN: predominantly red filament

Origin & Breeding History: The variety 'Chewgewest' originated from a controlled hybrid cross conducted by the breeder, Christopher Hugh Warner, of Newport, Shropshire, United Kingdom. The cross was made in June 2006 in Brockton, Newport, United Kingdom between the female parent variety 'Gelber Engel' and the male parent variety 'Westheitz'. From the resulting progeny, 'Chewgewest' was selected as a single plant in June 2007 based on its flower colour, continuous blooming and disease resistance. Asexual reproduction of 'Chewgewest' was first conducted by budding in July 2008 in Brockton, Newport, Shropshire, United Kingdom.

Tests & Trials: The comparative trial for 'Chewgewest' was conducted outdoors during the summer of 2020 in St. Thomas, Ontario. The trial included 9 plants of the candidate variety and 10 plants of the reference variety. All plants were grown from bare-rooted cuttings and transplanted into 13.6 litre containers in June 2020. Observations and measurements were taken from 10 plants, or 10 parts of plants, of each variety on July 23, 2020. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Chewgewest' with reference variety 'ChewNiceBell'

Entire leaflet length (cm)

Terminal leaf length (cm)

Terminal leaf width (cm)

Flower diameter (cm)

Petal length (cm)

Petal width (cm)

Main colour of inner side of petal (RHS)

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Rose: 'Chewgewest' (left) with reference variety 'ChewNiceBell' (right)

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Rose: 'Chewgewest' (left) with reference variety 'ChewNiceBell' (right)

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Rose: 'Chewgewest' (left) with reference variety 'ChewNiceBell' (right)