Denomination: 'Barthirtyfour'
Botanical Name: Phlox paniculata
Applicant/Holder: Bartels Stek B.V.
P.O. Box 26
2678 ZG
De Lier
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: 06-5422
Grant of Rights Date: 2007-11-22
Certificate Number: 3004
Date rights surrendered: 2014-11-17

Variety Description

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

Summary: Barthirtyfour' has a narrower upright growth habit than the reference varieties. The plant height of 'Barthirtyfour' is taller than the reference varieties. 'Barthirtyfour' has a longer, wider leaf than the reference varieties. The leaf colour of 'Barthirtyfour' is medium green while it is dark green in 'Barten'. 'Barthirtyfour' has a narrower cyme than that of 'Barten'. 'Barthirtyfour' has more florets than 'Barten' but fewer than 'Bareleven'. The main flower colour of 'Barthirtyfour' is blue pink while it is a lighter blue pink in 'Bareleven' and violet in 'Barten'.


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

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

CYME: domed shape, single
FLORET: round shape, bi colour, blue pink with purple red around the eye zone on the upper side, blue pink on lower side

Origin & Breeding History: 'Barthirtyfour' was discovered in Aalsmeer, The Netherlands in 1995 by seedling selection as a product of a planned breeding program. The cross of female parent 94.8 with the male parent variety 'Starfire' 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 'Barthirtyfour' with reference varieties 'Bareleven' and 'Barten'

Plant height (cm)

  'Barthirtyfour' 'Bareleven' 'Barten'
mean 41.0 28.6 32.0
std. deviation 0.67 2.37 0.82

Leaf length (cm)

  'Barthirtyfour' 'Bareleven' 'Barten'
mean 11.6 9.5 8.1
std. deviation 0.74 0.55 0.57

Leaf width (cm)

  'Barthirtyfour' 'Bareleven' 'Barten'
mean 5.5 3.6 4.2
std. deviation 0.41 0.47 1.13

Number of florets (count)

  'Barthirtyfour' 'Bareleven' 'Barten'
mean 265 375 185
std. deviation 3.05 3.86 7.59

Cyme diameter (cm)

  'Barthirtyfour' 'Bareleven' 'Barten'
mean 19.0 18.3 25.8
std. deviation 0.82 0.26 1.38

Petal colour (RHS)

  'Barthirtyfour' 'Bareleven' 'Barten'
upper side apical zone 73A 62A N81B
upper side basal zone N66A 67B 155D
lower side apical zone 73A 65B 155D
lower side basal zone 73A 65C N81D

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

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

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