Warm Yoigloo


Denomination: 'Warm Yoigloo'
Trade name: Warm Igloo
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Aris Horticulture Inc.
P.O. Box 230
Barberton, Ohio
United States of America
Breeder: Mark Smith, Syngenta Flowers, Inc., Gilroy, 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: 2007-01-24
Application Number: 07-5723
Grant of Rights Date: 2008-11-24
Certificate Number: 3417
Date rights surrendered: 2013-11-06

Variety Description

Varieties used for comparison: 'Rosy Yoigloo' (Rosy Igloo), 'Mammoth Coral' and 'Mei Kyo'

Summary: 'Warm Yoigloo' has a shorter plant than that of 'Mei Kyo' and begins flowering earlier than 'Mammoth Coral' and 'Mei Kyo'. 'Warm Yoigloo' has a smaller flower head diameter than 'Mammoth Coral' and a larger flower head diameter than 'Mei Kyo'. The flowers of 'Warm Yoigloo' belong to the yellow bronze colour group while those of 'Rosy Yoigloo' belong to the red bronze colour group and those of 'Mammoth Coral' and 'Mei Kyo' belong to the pink colour group.


PLANT: perennial garden chrysanthemum, natural season cultivation, cushion flowering type, USDA zone 5-9
STEM: absent to weak anthocyanin colouration

LEAF: truncate to broad wedged base, diverging to parallel margins of sinus between lateral lobes

FLOWERING: begins early
FLOWER BUD / NEWLY OPENED FLOWER HEAD: dark purple red with yellow on outer ray florets
FLOWER HEAD: double type, chromatic self colour type, medium yellow bronze colour group
RAY FLORET: longitudinal axis of majority is slightly reflexing, convex in cross-section, tip ranges from mamillate to dentate, inner ray florets are orange brown with dark purple red over-colour on upper side, outer ray florets are yellow orange with yellow base on upper side, lower side is light yellow orange with dark purple red under-colour

Origin & Breeding History: 'Warm Yoigloo' was developed by the breeder, Mr. Mark A. Smith, an employee of Yoder Brothers, Inc. in Barberton, Ohio, USA. It originated from a cross pollination made in Salinas, California, USA, in December 2000 between a Chrysanthemum seedling with white decorative flowers designated '95-L464005' as the female parent and Chrysanthemum variety 'Mei Kyo' as the male parent. 'Warm Yoigloo' was selected in October 2001 in Alva, Florida, USA based on its early (natural season) flowering time, uniform plant growth habit, desirable inflorescence form, inflorescence size and floret colour. Asexual reproduction of 'Warm Yoigloo' by vegetative tip cuttings was first conducted in Alva, Florida, USA in January 2002.

Tests & Trials: Trials for 'Warm Yoigloo' were conducted outdoors during the summer of 2007 at BioFlora Inc. in St. Thomas, Ontario. Twenty liners of each variety were transplanted into 20 cm pots on June 7, 2007. The plants were grown outdoors with drip irrigation, in rows spaced 50 cm apart. Observations and measurements were taken from 10 plants of each variety on August 30. Flower characteristics were observed at full flower on October 18 & 25. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Warm Yoigloo' with reference varieties 'Rosy Yoigloo', 'Mammoth Coral' and 'Mei Kyo'

Plant height (cm)

  'Warm Yoigloo' 'Rosy Yoigloo' 'Mammoth Coral' 'Mei Kyo'
mean 17.0 18.8 N/A 31.6
std. deviation 1.20 1.13 N/A 2.70

Flower head diameter (cm)

  'Warm Yoigloo' 'Rosy Yoigloo' 'Mammoth Coral' 'Mei Kyo'
mean 4.2 4.0 5.9 3.2
std. deviation 0.28 0.16 0.27 0.19

Colour of upper side of ray floret (RHS)

  'Warm Yoigloo' 'Rosy Yoigloo' 'Mammoth Coral' 'Mei Kyo'
bud / newly open 46A-N34A with yellow on outer florets 46A-53B N/A 70B with N74D under-colour
fully open inner florets: 31B-C with N34A-46A over-colour; outer florets: 18A-20B with 7A at base inner florets: N34C; outer florets: 31C-D 54C with shades of 56B N74D-76C under-colour with 70B tips

Colour of ray floret (RHS)

  'Warm Yoigloo' 'Rosy Yoigloo' 'Mammoth Coral' 'Mei Kyo'
lower side 16D/19D with 46A/53B under-colour 26D/24D N/A 77C with pink under-colour

Click on image for larger view
Warm Yoigloo
Chrysanthemum: 'Warm Yoigloo' (left) with reference variety 'Rosy Yoigloo' (right)

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Warm Yoigloo
Chrysanthemum: 'Warm Yoigloo' (left) with reference varieties 'Rosy Yoigloo' (centre) and 'Mammoth Coral' (right)

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Warm Yoigloo
Chrysanthemum: 'Warm Yoigloo' (left) with reference varieties 'Rosy Yoigloo' (centre) and 'Mei Kyo' (right)

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