Denomination: 'Barthirtyone'
Botanical Name: Phlox paniculata
Applicant/Holder: Bartels Breeding B.V.
Rietwijkeroordweg 15
1432 JG
Breeder: G.B.H. Bartels, Bartels Breeding B.V., Aalsmeer, Netherlands
Agent in Canada: Genesis Plant Propagation Ltd.
24245 48th Avenue
Langley, British Columbia
Tel: 604-514-1799
Application Date: 2006-04-06
Application Number: 06-5419
Grant of Rights Date: 2007-11-22
Certificate Number: 3001
Date rights surrendered: 2013-11-22

Variety Description

Varieties used for comparison: 'Barfourteen' and 'Barten'

Summary: 'Barthirtyone' has a narrower growth habit than that of 'Barten'. The plant height of 'Barthirtyone' is slightly shorter than that of 'Barfourteen'. 'Barthirtyone' has a narrower plant than the reference varieties. The leaf of 'Barthirtyone' is shorter than the reference varieties. 'Barthirtyone' has a slightly narrower leaf than that of 'Barten'. The leaf of 'Barthirtyone' has a oblanceolate shape while it is linear-subulate in 'Barfourteen' and lanceolate in 'Barten'. 'Barthirtyone' has a shorter cyme than the reference varieties. The cyme of 'Barthirtyone' is narrower than that of 'Barten'. The main flower colour of 'Barthirtyone' is purple while it is violet in the reference varieties.


PLANT: perennial, narrow upright growth habit, begins flowering in midseason

LEAF: oblanceolate shape, no glandular stickiness, very sparse to no pubescence on upper and lower side, dark green

CYME: domed shape, single
FLORET: round shape, one colour, purple on the upper side, blue pink on lower side

Origin & Breeding History: 'Barthirtyone' was discovered in Aalsmeer, The Netherlands in 1995 by seedling selection as a product of a planned breeding program. The cross of female parent with the male parent 94.05 took place in 1994. Selection criteria included dwarf growth habit and suitability for potting production.

Tests & Trials: Tests and trials were conducted during the summer of 2006 in Langley, British Columbia. Trials consisted of 25 plants of each variety individually grown in 1 gallon pots outdoors. Observations and measurements were taken from 10 plants of each variety. Colour determinations were done using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Barthirtyone' with reference varieties 'Barfourteen' and 'Barten'

Plant height (cm)

  'Barthirtyone' 'Barfourteen' 'Barten'
mean 29.0 33.1 32.0
std. deviation 1.65 0.39 0.82

Plant width (cm)

  'Barthirtyone' 'Barfourteen' 'Barten'
mean 10.6 21.8 25.0
std. deviation 1.04 0.59 1.12

Leaf length (cm)

  'Barthirtyone' 'Barfourteen' 'Barten'
mean 5.7 9.9 8.1
std. deviation 0.45 0.75 0.57

Leaf width (cm)

  'Barthirtyone' 'Barfourteen' 'Barten'
mean 2.8 2.9 4.2
std. deviation 0.28 0.08 1.13

Cyme length (cm)

  'Barthirtyone' 'Barfourteen' 'Barten'
mean 9.3 16.0 16.0
std. deviation 0.56 1.05 0.49

Cyme diameter (cm)

  'Barthirtyone' 'Barfourteen' 'Barten'
mean 15.7 15.7 25.8
std. deviation 1.12 1.27 1.38

Petal colour (RHS)

  'Barthirtyone' 'Barfourteen' 'Barten'
upper side apical zone N74A N80A N81B
upper side basal zone N74A N74A 155D
lower side apical zone N80A N88D 155D
lower side basal zone N80B N88D N81D

Click on image for larger view
Phlox: 'Barthirtyone' (right) with reference variety 'Barten' (left)

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