Denomination: 'ILVOBO'
Trade name: Bobo Hydrangea
Botanical Name: Hydrangea paniculata
Applicant/Holder: Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
United States of America
Breeder: Johan Van Huylenbroeck, Agriculture Research Center, Melle, Belgium
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2010-09-01
Application Number: 10-7079
Grant of Rights Date: 2014-09-29
Certificate Number: 4910
Grant of Rights Termination Date: 2032-09-29

Variety Description

Variety used for comparison: 'Jane' (Little Lime)

Summary: The leaf blade of 'ILVOBO' is smaller than that of 'Jane'. The leaf blade of 'ILVOBO' has weak blistering whereas that of 'Jane' has medium to strong blistering. The inflorescence of 'ILVOBO' is taller and larger in diameter than that of 'Jane'. The calyx of the sterile flower of 'ILVOBO' is smaller in diameter than that of 'Jane'. The sepal of the sterile flower of 'ILVOBO' is yellow green when newly opened and white when fully opened whereas that of 'Jane' is light green with yellow green tones when newly opened and light green when fully opened. The plants of 'ILVOBO' begin flowering early in the season while those of 'Jane' begin flowering mid-season.


PLANT: non-climbing, semi-upright growth habit
STEM: no fasciation, brownish, many tan lenticels in autumn

LEAF BLADE: no lobing, elliptic, short tip, obtuse base, shallow incisions, no variegation, medium green, weak glossiness on upper side, weak blistering

INFLORESCENCE: conical, slight conspicuousness of fertile flowers
STERILE FLOWER: single, medium degree of overlapping of sepals, margin incisions absent on all sepals, yellow green (RHS 150C-D) when newly opened, white (RHS NN155A-B) when fully opened
FERTILE FLOWER: white petals


Origin & Breeding History: 'ILVOBO' originated from an open pollinated cross between the female parent, 'Pink Diamond', and pollen from an unknown male parent, conducted by the breeder Johan Van Huylenbroeck, an employee at the Institute for Agricultural and Fisheries Research (ILVO), in the summer of 2003 in Melle, Belgium. In the summer of 2005, one plant was selected for its compact growth habit, early flowering and numerous sterile flowers per panicle.

Tests & Trials: Trials for 'ILVOBO' were conducted in an outdoor, irrigated, container trial during the summer of 2013 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 10 shrubs each of the candidate and reference variety. All shrubs were grown from rooted cuttings and transplanted into 13 litre pots on July 8, 2012. Trials were arranged outdoors in rows with 1 metre spacing between plants. Observations and measurements were taken from 10 plants of each variety on July 11, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'ILVOBO' with reference variety 'Jane'

Leaf blade length (cm)

  'ILVOBO' 'Jane'
mean 7.9 9.6
std. deviation 0.55 0.38

Leaf blade width (cm)

  'ILVOBO' 'Jane'
mean 4.4 5.4
std. deviation 0.23 0.37

Inflorescence height (cm)

  'ILVOBO' 'Jane'
mean 29.0 18.9
std. deviation 3.95 2.40

Inflorescence diameter (cm)

  'ILVOBO' 'Jane'
mean 29.0 20.6
std. deviation 3.95 1.76

Calyx diameter of sterile flower (mm)

  'ILVOBO' 'Jane'
mean 2.3 3.8
std. deviation 0.16 0.29

Sepal colour of sterile flower (RHS)

  'ILVOBO' 'Jane'
newly opened 150C-D 145A with 150C-D tones
fully opened NN155A-B 145B-C

Click on image for larger view
Hydrangea: 'ILVOBO' (left) with reference variety 'Jane' (right)

Click on image for larger view
Hydrangea: 'ILVOBO' (left) with reference variety 'Jane' (right)

Click on image for larger view
Hydrangea: 'ILVOBO' (left) with reference variety 'Jane' (right)

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