Yoorchard Lake

Chrysanthemum

Variety Description

Varieties used for comparison: 'Yonew York' (New York) and 'Yosnowmass' (Snowmass)

Summary: 'Yoorchard Lake' is typically cultivated as a disbud type while 'Yonew York' is typically cultivated as a spray type. The plants of 'Yoorchard Lake' are taller than those of 'Yonew York'. 'Yoorchard Lake' has a longer leaf blade than 'Yonew York' and a longer lowest lateral sinus of the leaf then 'Yosnowmass'. 'Yoorchard Lake' has a larger flower head diameter than 'Yonew York' and a smaller flower head diameter with shorter ray floret corolla tube than 'Yosnowmass'. The upper side of the outer ray floret of 'Yoorchard Lake' is white with a blue pink tip while it is white flushed with light blue pink over-colour for 'Yonew York' and white for 'Yosnowmass'. The inner ray florets of 'Yoorchard Lake' are yellow green while those of 'Yonew York' are purple red.

Description:

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

LEAF: dark to very dark green, 1.7:1 length/width ratio, obtuse base, mostly diverging margins of sinus between lateral lobes

FLOWER HEAD: double decorative incurve type, chromatic self colour type, white colour group with very light purple tipped ray florets, dense to very dense ray florets
RAY FLORET: incurved type, longitudinal axis of majority is incurved, medium curvature, concave in cross-section, incurved end, emarginate tip, inner ray florets are yellow green on upper and lower sides, outer ray florets are white with blue pink tip on upper side and yellow green on lower side

Origin & Breeding History: 'Yoorchard Lake' is a product of 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 between proprietary Chrysanthemum seedling selection designated 'YB-A0358' as the female parent and another proprietary Chrysanthemum seedling selection designated 'YB-4640' as the male parent. This cross was conducted by the breeder in February 2000, in Salinas, California, USA. 'Yoorchard Lake' was discovered and selected in November 2000, as a single flowering plant among the progeny of the stated cross growing in a controlled environment in Fort Myers, Florida, USA. The selection of this plant was based on its uniform plant growth habit, desirable inflorescece form and floret colours, fast response time and excellent post-production longevity. Asexual reproduction of 'Yoorchard Lake' by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in March 2001.

Tests & Trials: Trials for 'Yoorchard Lake' were conducted in the fall of 2007 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 had the central bud removed. Observations and measurements were taken from 10 plants of each variety on October 29, 2007. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Yoorchard Lake' with reference varieties 'Yonew York' and 'Yosnowmass'

Plant height (cm)

Leaf length (cm)

Length of lowest lateral sinus of leaf blade (cm)

Flower head diameter (cm)

Length of ray floret corolla tube (cm)

Colour of upper side of ray floret (RHS)

Colour of ray floret (RHS)

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Chrysanthemum: 'Yoorchard Lake' (left) with reference variety 'Yosnowmass' (right)

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Chrysanthemum: 'Yoorchard Lake' (left) with reference varieties 'Yosnowmass' (centre) and 'Yonew York' (right)