Denomination: 'Santiago'
Botanical Name: Hydrangea macrophylla subsp. serrata
Applicant/Holder: Challet, Jean Pierre
Route de Chollet, 49440
Breeder: Jean Pierre Challet, Nuaillé, France
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2010-08-10
Application Number: 10-7052
Grant of Rights Date: 2013-06-19
Certificate Number: 4534
Date rights revoked: 2016-06-19

Variety Description

Variety used for comparison: 'Miyama Yae Murasaki'

Summary: The plant of 'Santiago' is taller than the plant of 'Miyama Yae Murasaki'. The leaf of 'Santiago' is shorter than the leaf of 'Miyama Yae Murasaki'. The leaf of 'Santiago' has a medium length tip and obtuse base while the leaf of 'Miyama Yae Murasaki' has a long tip and acute base. The main colour of the leaf is dark green for 'Santiago' while it is light green for 'Miyama Yae Murasaki'. The sepal of 'Santiago' is blue pink and purple red when fully opened while the sepal of 'Miyama Yae Murasaki' is blue pink with violet at the base.


PLANT: non-climbing, upright growth habit
STEM: no fasciation, green, lenticels dark red brown

LEAF BLADE: no lobing, elliptic, medium length tip, obtuse base, medium depth incisions, no variegation, dark green, absent or weak glossiness, medium blistering

INFLORESCENCE: flattened shape, sterile flowers in one whorl, very conspicuous fertile flowers, flowers early
STERILE FLOWER: semi-double, medium overlapping of sepals, margin incisions absent on all sepals, newly opened sepal closest to blue pink (RHS 63B) with tones of lighter blue pink (RHS 63C) and yellow green (RHS 150D) at base, fully opened sepal blue pink (RHS 64D) and purple red (RHS N57D) with tones of blue pink (RHS 63B) and purple red (RHS N57C), sepal ages to blue pink (RHS 68B) with violet (RHS 75C) at base
FERTILE FLOWER: petals pink.

Origin & Breeding History: The variety 'Santiago' originated from a controlled cross made in Nuaillé, France in June 1998. The female parent was the variety 'Mont Aso' and the male parent was the variety 'Blue Wave'. The new cultivar was selected in August 2005 based on characteristics that included having a compact plant growth and rounded habit, good branching characteristics and numerous lace-cap flower. Asexual reproduction by softwood cuttings was first conducted in 2005 in Nuaillé, France.

Tests & Trials: Trials for 'Santiago' were conducted during the spring of 2012, in St. Thomas, Ontario. The trial included a total of 10 plants of each variety. All plants were grown from rooted cuttings planted into 4.4 litre containers in April 2011 and then transplanted into 13 litre containers in August 2011. Observations and measurements were taken from 10 plants of each variety on May 25, 2012. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Santiago' with reference variety 'Miyama Yae Murasaki'

Plant height (cm)

  'Santiago' 'Miyama Yae Murasaki'
mean 33.1 25.2
std. deviation 2.91 1.88

Leaf blade length (cm)

  'Santiago' 'Miyama Yae Murasaki'
mean 10.9 14.0
std. deviation 0.42 1.03

Colour of sterile flower (RHS)

  'Santiago' 'Miyama Yae Murasaki'
newly opened closest to 63B with 63C tones, 150D at base N66C, 75B at base
fully opened 64D & N57D with 63B & N57C tones N66C, 75B at base
aged 68B with 75C at base N/A

Click on image for larger view
Hydrangea: 'Santiago' (left) with reference variety 'Miyama Yae Murasaki' (right)

Click on image for larger view
Hydrangea: 'Santiago' (left) with reference variety 'Miyama Yae Murasaki' (right)

Click on image for larger view
Hydrangea: 'Santiago' (left) with reference variety 'Miyama Yae Murasaki' (right)

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