Denomination: 'Yonorwich'
Trade name: Norwich
Botanical Name: Chrysanthemum
Applicant/Holder: Aris Horticulture Inc.
P.O. Box 230
Barberton, Ohio
United States of America
Breeder: Wendy Bergman, Syngenta Flowers, Inc., Alva, United States of America
Agent in Canada: Keepsake Plants, Ltd.
P.O. Box 370
268 Seacliff Drive West
Leamington, Ontario
N8H 3W3
Tel: 519-326-6121; Ext.224
Application Date: 2003-04-07
Application Number: 03-3553
Date Withdrawn: 2007-11-22

Variety Description

Variety used for comparison: 'Red Delano'

Summary: Shape of the base of the leaf blade is broad wedged for 'Yonorwich' while it is truncate for 'Red Delano'. 'Yonorwich' has lighter red flowers than 'Red Delano'. The lower side of the ray florets of 'Yonorwich' is light yellow brown with brown red under colour while it is light brown purple and blue pink with brown purple under colour for 'Red Delano'.


PLANT: year round cultivation for pot production, disbud flowering type, 8 week response group, medium to tall height
STEM: no anthocyanin colouration

LEAF: medium to long, medium width, broad wedged base
LATERAL LOBE: converging margins of sinus
LOWER LOBE: short to medium length, medium deep sinus

FLOWER HEAD: double, decorative sub-type, self-coloured, red colour group of medium to strong intensity, medium to large diameter, no bracts among ray florets
RAY FLORET: short to medium length blade with short corolla tube, reflexed longitudinal axis of majority, convex in cross-section, dentate tip (1 notch), light brown and brown red combined in checkerboard pattern on upper side, light yellow brown with brown red under colour on lower side

Origin & Breeding History: 'Yonorwich' is a product from a planned breeding program conducted by the breeder, Mrs. Wendy R. Bergman, an employee of Yoder Brothers, Inc. in Barberton, Ohio, USA. It originated from a cross made in January 1999 in Salinas, California, USA between a proprietary Chrysanthemum seedling selection designated 'YB-4637' as the female parent and another proprietary Chrysanthemum seedling selection designated 'YB-6489' as the male parent. 'Yonorwich' was selected in November 1999 in Fort Myers, Florida, USA based on its uniform plant growth habit, desirable inflorescence form and floret colours, fast response time and excellent post production longevity.

Tests & Trials: Trials for 'Yonorwich' were conducted in the fall of 2006 at Yoder Canada Ltd. in Leamington, Ontario. They were performed under greenhouse conditions similar to those used in commercial Chrysanthemum production. 40 unrooted cuttings per variety were directly stuck into 15 cm pots with 4 cuttings per pot and 10 pots per variety. The pots were spaced 30 cm apart. The plants were pinched once prior to short day treatment. All plants were disbudded by removal of lateral buds. Measured characteristics were based on measurements taken from 10 plants or parts of plants on November 1, 2006. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison table for 'Yonorwich' with reference variety 'Red Delano'

Ray floret colour (RHS)

  'Yonorwich' 'Red Delano'
upper side N170C & 180A combined in checkerboard pattern 47C & 46A combined in checkerboard pattern
lower side 162B with 182C under colour 186B-D with 185C under colour

Click on image for larger view
Chrysanthemum: 'Yonorwich' (left) with reference variety 'Red Delano' (right)

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