Denomination: 'Rendia'
Botanical Name: Hydrangea paniculata
Applicant/Holder: Renault, Jean
Le Brin D'Eau, FR-53120
Breeder: Jean Renault, Gorron, France
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2013-06-19
Application Number: 13-8059

Variety Description

Varieties used for comparison: 'Bokraflame', 'Renhy', 'Rensun' and 'WIMSRED'

Summary: The shape of the leaf blade of 'Rendia' is ovate whereas the leaf blade of 'Renhy' is elliptic. The calyx of the sterile flower of 'Rendia' is medium sized in diameter whereas the calyx of the sterile flower of 'Bokraflame' and 'Rensun' is small in diameter. The degree of overlapping of the sepals of the sterile flower is weak for 'Rendia' whereas the overlapping of the sepals is strong for 'WIMSRED'.


PLANT: non-climbing type, semi-upright growth habit, tall natural height (including inflorescence)
STEM: no fasciation, purplish, absent or few lenticels (in autumn), white lenticels

LEAF BLADE: medium to long, medium width, no lobing, ovate shape, short tip, rounded base, shallow incisions of margin, no variegation, medium green upper side, absent or weak degree of glossiness on upper side, weak degree of blistering

FLOWERING: begins mid-season
INFLORESCENCE: conical shape, medium height, medium to large diameter, inconspicuous or slightly conspicuous fertile flowers
STERILE FLOWER: medium sized diameter, single type, weak degree of overlapping of sepals, incisions of margin absent on all sepals
SEPAL OF STERILE FLOWER (INNER SIDE): main colour is white (RHS 155A), no secondary colour

Origin & Breeding History: 'Rendia' was discovered and developed by the breeder, Jean Renault, in Gorron, France. It was discovered in 2007 as a whole plant mutation of an unnamed proprietary seedling. 'Rendia' was selected in 2007 for its panicles of flowers that emerge white and mature to red at the end of summer, early colour change of the inflorescences, compact and mounding plant growth habit, fertile flowers with large sepals, and reddish brown stem colour. 'Rendia' was first asexually propagated by softwood cuttings in May 2007, in Gorron, France.

Tests & Trials: The detailed description of 'Rendia' is based on the UPOV report of Technical Examination, application number 2011/0927, 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 2011 to 2013. The colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

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Hydrangea: 'Rendia'

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Hydrangea: 'Rendia'

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Hydrangea: 'Rendia'

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