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Hiriv

Hydrangea

Denomination: 'Hiriv'
Trade name: HI River
Botanical Name: Hydrangea macrophylla
Applicant/Holder: Hi Breeding B.V.
Hooflaan 17
De Lier
2678 KM
Netherlands
Breeder: Roy Robin van Dijk, Hi Breeding B.V., De Lier, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-317-7511
Application Date: 2020-04-07
Provisional Protection:: 2020-04-07
Application Number: 20-10140

Variety Description

Variety used for comparison: 'Magic Tizz'

Summary: The diameter of the inflorescence of 'Hiriv' is small while that of 'Magic Tizz' is medium sized. The diameter of the calyx of 'Hiriv' is small while that of 'Magic Tizz' is small to medium sized. The secondary colour of the sepal of the sterile flower of 'Hiriv' is light green while that of 'Magic Tizz' is absent.

Description:

PLANT: non-climbing type, semi-upright growth habit, short including inflorescence

STEM: fasciation present, green, medium number of red lenticels in autumn

LEAF BLADE: short, narrow, no lobing, ovate shape, short tip, obtuse base, medium depth margin incisions, no variegation, medium green, no secondary colour, medium degree glossiness of upper side, weak blistering

FLOWERING: begins early to mid-season
INFLORESCENCE: globular shape, very short to short, small diameter, inconspicuous or slightly conspicuous fertile flowers
CALYX: small diameter
STERILE FLOWER: single type, medium degree of overlapping of sepals
SEPALS OF STERILE FLOWER: margin incisions on some sepals, medium blue pink (RHS 68B) at centre fading to lighter blue pink (RHS 73B) towards apex, light green (RHS 144C) secondary colour with a diffused distribution
PETAL OF FERTILE FLOWER: pink

Origin & Breeding History: 'Hiriv' originated from a controlled cross conducted between two proprietary seedlings, the female parent designated '1011' and the male parent designated '1004', in De Lier, Netherlands in April 2013. In April 2015, a single unique plant was selected from the resulting progeny in De Lier, Netherlands based on its plant form and appearance, branch strength, reblooming capacity, disease tolerance and shelf life. Asexual reproduction of 'Hiriv' was first conducted by tissue culture in June 2015 in De Lier, Netherlands.

Tests & Trials: The detailed description of 'Hiriv' is based on the UPOV report of Technical Examination, application number 2018/3055, purchased from the Community Plant Variety Office in Angers, France. The trials were conducted by Groupe d'Étude et de Contrôle des Variétés et des Semences in Brion, France between February 15, 2020 and December 15, 2021. Colour determinations were made using the 2015 Royal Horticultural Society (RHS) Colour Chart.


Comparison table for 'Hiriv' with reference variety 'Magic Tizz'

Secondary colour of the sepal of the sterile flower (RHS)

  'Hiriv' 'Magic Tizz'
main 144C N/A

Click on image for larger view
Hiriv
Hydrangea: 'Hiriv'

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