Denomination: 'VDTG26'
Trade name: Dark Angel American Pie
Botanical Name: Dahlia
Applicant/Holder: Verwer-Dahlia's BV
Derde Poellaan 73/75
NL 2161 DL
Breeder: Aad W.M. Verwer, Verwer-Dahlia's BV, Lisse, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2006-12-07
Application Number: 06-5692
Grant of Rights Date: 2009-10-26
Certificate Number: 3661
Date rights surrendered: 2013-11-27

Variety Description

Variety used for comparison: 'Zone 10' (Mystic Dreamer)

Summary: 'VDTG26' is a Dahlia variety which has shorter, more compact plants than the reference variety 'Zone 10'. 'VDTG26' has a longer, wider leaf and shorter peduncle than 'Zone 10'. The flower heads of 'VDTG26' are positioned moderately above the foliage, compared with the flower heads of the reference variety which are high above the foliage. The two varieties also differ in colour of the ray florets.


PLANT: upright habit, medium height, brownish red to purple stem

LEAF: predominantly pinnate (5 to 7 leaflets), strong wing, long, wide to very wide, green tinged with purple, weak to medium glossiness, smooth to weakly rugose texture, depressed veins
LEAFLET: elliptic to oblanceolate shape, acute to attenuate base, medium to many shallow to medium depth incisions
PEDUNCLE: short to medium length, brownish red to purple

FLOWER HEAD: moderately above foliage, semi-upright, single, daisy type disc, no collar segments, very few ray florets
RAY FLORET: keeled upper surface, two keels, weakly concave in cross section at mid-point, weakly revolute margin along distal quarter, reflexing longitudinal axis, weak curvature of distal quarter, absent to very weak twisting, rounded apex with mamillate or retuse tip
RAY FLORET INNER SIDE: more than two colours, violet main colour with diffused stripes of violet and purple, solid to flushed yellow orange at base
RAY FLORET OUTER SIDE: similar colour to inner side with purple stripes along veins and keels
DISC: medium diameter relative to flower head, red brown before anther dehiscence, yellow to orange at dehiscence

Origin & Breeding History: 'VDTG26' was developed at the nursery of Fa. Gebr. Verwer, in Lisse, The Netherlands, and originated from the open pollinated cross between the female parent, a Dahlia plant identified as 'R', and pollen of an unidentified Dahlia plant. The cross took place in the summer of 2003. A single seedling was selected in the summer of 2004, based on criteria for flower form, colour, compact plant habit and dark foliage colour.

Tests & Trials: 'VDTG26' was tested in an outdoor trial during the spring of 2008 in St. Thomas, Ontario. The trial consisted of a total of 15 plants per variety. All plants were grown from rooted cuttings and transplanted into 20 cm pots on May 15, 2008. Observations and measurements were taken from 10 plants of each variety on July 8, 2008. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'VDTG26' with reference variety 'Zone 10'

Plant height (cm)

  'VDTG26' 'Zone 10'
mean 29.0 42.2
std. deviation 1.83 4.26

Leaf length (cm)

  'VDTG26' 'Zone 10'
mean 14.5 11.3
std. deviation 1.23 1.19

Leaf width (cm)

  'VDTG26' 'Zone 10'
mean 11.9 7.9
std. deviation 1.59 1.17

Length of peduncle (cm)

  'VDTG26' 'Zone 10'
mean 11.9 7.9
std. deviation 1.23 1.19

Colour of upper side of ray floret (RHS)

  'VDTG26' 'Zone 10'
main 75D 65B-D
secondary 77B with N74B tones N66C
tertiary 13A-B 42A

Click on image for larger view
Dahlia: 'VDTG26' (left) with reference variety 'Zone 10' (right)

Click on image for larger view
Dahlia: 'VDTG26' (left) with reference variety 'Zone 10' (right)

Click on image for larger view
Dahlia: 'VDTG26' (left) with reference variety 'Zone 10' (right)

Date modified: