Denomination: 'Avantgarde'
Previously Proposed Denomination: 'Hycahedi'
Synonym: HEDI
Botanical Name: Hydrangea macrophylla
Applicant/Holder: Hydrangea Breeders Association B.V.
Achterweg 58a
1424 PR
De Kwakel
Breeder: Niels Arts, Aalsmeer, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2011-10-14
Application Number: 11-7395
Grant of Rights Date: 2017-12-15
Certificate Number: 5612
Grant of Rights Termination Date: 2037-12-15

Variety Description

Variety used for comparison: 'Otaksa'

Summary: The leaf blade of 'Avantgarde' is more pointed than the leaf blade of 'Otaksa'. The sterile flower of 'Avantgarde' has no overlapping of the sepals whereas the sterile flower of 'Otaksa' has overlapping of the sepals.


PLANT: upright growth habit, medium natural height (including inflorescence)
STEM: no fasciation, green

LEAF BLADE: short to medium length, no lobing, ovate shape, acute apex, acute base, finely cut incisions of margin, no variegation, light green upper side, glossiness present on upper side

FLOWERING: begins early to mid-season
INFLORESCENCE: globular shape, medium to large diameter, inconspicuous fertile flowers
STERILE FLOWER: medium sized diameter, single type, no overlapping of sepals, incisions of margin absent on all sepals
SEPAL OF STERILE FLOWER (INNER SIDE): weak intensity of colouration, one colour, light blue pink (RHS 62D)

Origin & Breeding History: 'Avantgarde' was bred and developed by the breeder, Niels Arts, in Aalsmeer, Netherlands. It originated from a cross conducted on May 15, 2007, in De Kwakel, Netherlands, between the female parent designated '206255-01', and the male parent designated '2020611-01'. From the resulting progeny, 'Avantgarde' was selected on April 25, 2009, in Glandorf, Germany, for its inflorescence size and production without vernalisation, and overall plant growth habit. 'Avantgarde' was first asexually propagated by cuttings on April 20, 2010, in Glandorf, Germany.

Tests & Trials: The detailed description of 'Avantgarde' is based on the UPOV report of Technical Examination, application number 2008/1171, purchased from the Community Plant Variety Office, in Angers, France. The trial was conducted by the Groupe d'Étude et de contrôle des Variétés Et des Semences, in Brion, France, from 2009 to 2010. The colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

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Hydrangea: 'Avantgarde'

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