Denomination: 'Viking'
Botanical Name: Campanula
Applicant/Holder: AB Kwekersrechten B.V.
Burg. Tonckensstraat 47
7921 KB
Breeder: Arie Blom, Vleuten, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2009-06-02
Application Number: 09-6657
Date Withdrawn: 2014-09-29

Variety Description

Variety used for comparison: 'Summertime Blues'

Summary: The plant of 'Viking' is shorter and narrower than the plant of 'Summertime Blues'. The sepal of 'Viking' is longer than the sepal of 'Summertime Blues'. The flower of 'Viking' is shorter with a narrower diameter than the flower of 'Summertime Blues'. The inner side of the corolla lobe of 'Viking' is violet with lighter violet along the margin whereas the inner side of the corolla lobe of 'Summertime Blues' is bluer violet with lighter tones towards the apex. The outer side of the corolla lobe of 'Viking' is violet whereas the outer side of the corolla lobe of 'Summertime Blues' is bluer violet.


PLANT: upright growth habit
STEM: very dense pubescence, medium green, medium intensity of anthocyanin colouration on middle third

LEAF BLADE: narrow ovate, mostly attenuate shaped base (some cuneate shape), dentate margin, weak undulation of margin, medium green on upper side, absent or very weak glossiness on upper side, medium pubescence on upper side, no anthocyanin colouration

FLOWER: outward to drooping attitude, campanulate form, sinus between corolla lobes is medium depth
CALYX: strong anthocyanin colouration on margin, strong pubescence on margin edge
SEPAL: semi-erect attitude relative to flower
COROLLA LOBE: inner side is violet (RHS N82A-B) with lighter violet (RHS N82D) on margin, outer side is violet (RHS N82C-D)
STIGMA: small to medium size, whitish yellow (RHS 155D)
STYLE: white (RHS NN155B) with light blue violet (RHS 85C-D) flush
ANTHER: light yellow before dehiscence

Origin & Breeding History: 'Viking' is a product from a planned breeding program conducted by the breeder, Arie Blom, in the Netherlands. It originated from a controlled cross between a proprietary seedling designated 'Ca 402-01' as the female parent, and a proprietary seedling designated 'Ca 406-01' as the male parent. The cross was conducted in May 2004 in IJsselstein, Netherlands. In June 2007, 'Viking' was selected by the breeder in Zuidwolde, Netherlands based on its plant growth habit, non-invasive quality, flower sterility, flower size, and flower colour. Asexual reproduction of 'Viking' by tissue culture was first conducted in October 2007 in Enkhuizen, Netherlands.

Tests & Trials: The trial of 'Viking' was conducted as an outdoor container trial during the summer of 2013, at BioFlora Inc. in St. Thomas, Ontario. It included a total of 15 plants of the candidate variety and 11 plants of the reference variety. All plants were grown from rooted cuttings transplanted to 4.5 litre containers in October 2012. Observations and measurements were taken from 10 plants or parts of plants of each variety on June 12, 2013. All colour determinations were made using the 2007 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Viking' with reference variety 'Summertime Blues'

Plant height (cm)

  'Viking' 'Summertime Blues'
mean 23.1 35.6
std. deviation 5.01 5.14

Plant width (cm)

  'Viking' 'Summertime Blues'
mean 21.3 33.3
std. deviation 2.94 6.09

Sepal length (cm)

  'Viking' 'Summertime Blues'
mean 2.0 1.4
std. deviation 0.20 0.14

Flower diameter (cm)

  'Viking' 'Summertime Blues'
mean 3.1 3.6
std. deviation 0.36 0.25

Flower length (cm)

  'Viking' 'Summertime Blues'
mean 4.6 5.3
std. deviation 0.23 0.35

Colour of corolla lobe (RHS)

  'Viking' 'Summertime Blues'
inner side N82A-B with N82D along margin N87B-C with N87D tones toward apex
outer side N82C-D N87C-D

Click on image for larger view
Campanula: 'Viking' (left) with reference variety 'Summertime Blues' (right)

Click on image for larger view
Campanula: 'Viking' (left) with reference variety 'Summertime Blues' (right)

Click on image for larger view
Campanula: 'Viking' (left) with reference variety 'Summertime Blues' (right)

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