Denomination: 'Balnovost'
Trade name: Dahlietta Violet Frost
Botanical Name: Dahlia
Applicant/Holder: Ball Horticultural Company
622 Town Road
West Chicago, Illinois
United States of America
Breeder: Neil Anderson, Pan American Seed Co., West Chicago, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2001-04-11
Application Number: 01-2613
Grant of Rights Date: 2007-09-25
Certificate Number: 2926
Date rights surrendered: 2010-09-20

Variety Description

Variety used for comparison: 'Betty' (Dahlietta Betty)

Summary: 'Balnovost' has a slightly longer leaf than 'Betty'. The leaf margin of 'Balnovost' has shallower incisions than 'Betty'. 'Balnovost' has a bi-coloured flower while 'Betty' is one-coloured. The flower of 'Balnovost' has fewer ray florets than 'Betty'.


PLANT: upright habit
STEM: light green, no anthocyanin colouration

LEAF: simple and compound types, medium green, wings on petiole present, few shallow incisions, smooth to very weakly rugose texture to upper surface, veins on upper surface raised

FLOWER: medium anthocyanin colouration on the peduncle, located moderately above the foliage, weakly to moderately acute attitude relative to peduncle, semi-double type, dark pink bicolour
RAY FLORET: slightly incurving to straight along the longitudinal axis, slight curvature of the apex, moderately concave in u-shape in cross section at midpoint, revolute to flat lateral margin at middle, rounded to pointed tip, uneven colour pattern, darker and more purple red than (RHS N66B) at apex and distal area of upper side, blue pink to light blue pink (RHS 73B-C) in middle and basal area of upper side, violet (RHS 75B) with purple (RHS 64A-B) along margins of lower side
DISC: medium diameter in relation to flower head diameter, yellow colour before anther dehiscence, yellow orange colour at dehiscence

Origin & Breeding History: 'Balnovost' originated in a controlled breeding program in the winter/spring 1998/1999 at Elburn, Illinois, USA. 'Balnovost' was the result of the pollination of 'Figaro White' with a mix of pollen from the Figaro Improved Series. Selection criteria included flower colour and pattern and growth habit.

Tests & Trials: Trials were conducted in a polyhouse in the spring/summer of 2006 in St. Thomas, Ontario. The trial included 15 plants of the candidate and reference varieties each individually grown in 15cm pots. Observations and measurements were taken from 10 plants of each variety. All colour measurements were made using the 2001 RHS colour chart.

Comparison tables for 'Balnovost' with reference variety 'Betty'

Leaf length: (cm)

  'Balnovost' 'Betty'
mean 10.0 7.8
std. deviation 0.86 0.76

Ray Floret colour: (RHS)

  'Balnovost' 'Betty'
primary on upper side darker than N66B N78A-N74A
secondary on upper side 73B-C N66A at base
primary on lower side pinker than 75B N74B-C
secondary on lower side 64A-B N74A

Click on image for larger view
Dahlia: 'Balnovost' (left) with reference variety 'Dahlietta® Betty' (right)

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