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Denomination: 'Abetwo'
Trade name: Incrediball
Botanical Name: Hydrangea arborescens
Applicant/Holder: Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
United States of America
Breeder: Timothy D. Wood, Spring Lake, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2008-07-29
Application Number: 08-6417
Grant of Rights Date: 2011-08-19
Certificate Number: 4166
Grant of Rights Termination Date: 2029-08-19

Variety Description

Variety used for comparison: 'Annabelle'

Summary: The plants of 'Abetwo' are semi-upright mounding with strong reflowering after spring pruning while those of 'Annabelle' are upright with reflowering ranging from absent to weak after spring pruning. The sterile flowers of 'Abetwo' have sepals which are more white than those of 'Annabelle'.


PLANT: non-climbing type, strong reflowering after spring pruning, semi-upright mounding growth habit
STEM: no fasciation, green and brownish

LEAF BLADE: no lobing, ovate, tip ranging from short to long, cordate base, medium incision depth, no variegation, medium green, absent or weak glossiness on upper side, medium blistering

INFLORESCENCE: globular, fertile flowers inconspicuous or slightly conspicuous, mid season flowering
STERILE FLOWER: single, weak degree of overlapping of sepals, margin incisions ranging from absent to present on some sepals, white (RHS NN155D) sepals
FERTILE FLOWER: white petals

Origin & Breeding History: 'Abetwo' orginated from an open pollinated cross between the female parent variety 'Annabelle' and pollen from an unknown male parent in Grand Haven, Michigan, United States in 2002. The new Hydrangea variety was developed by the breeder, Timothy D. Wood, an employee of Spring Measow Nursery in Grand Haven, Michigan. 'Abetwo' was selected in 2004 based on stem strength, inflorescence size and largely sterile mophead-type flowers. Asexual reproduction of 'Abetwo' by softwood cuttings was first conducted in 2004 in Grand Haven, Michigan, United States.

Tests & Trials: Trials for 'Abetwo' were conducted in an outdoor irrigated container trial during the summer of 2010, in St. Thomas, Ontario. The trial included a total of 15 shrubs each of the candidate and reference varieties. All shrubs were grown from 'quick turn' potted liners, transplanted into 7.5 liter containers in the spring of 2009. Trials were arranged in rows with 1 m spacing between plants. Due to warm spring temperatures, the trial plants were cut back in May 2010. As a result flower characteristics are smaller in size than typically observed. Observations and measurements were taken from 10 plants of each variety on July 19, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison table for 'Abetwo' with reference variety 'Annabelle'

Colour of sterile flower (RHS)

  'Abetwo' 'Annabelle'
sepals NN155D NN155A

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Hydrangea: 'Abetwo' (left) with reference variety 'Annabelle' (right)

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Hydrangea: 'Abetwo' (left) with reference variety 'Annabelle' (right)

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Hydrangea: 'Abetwo' (left) with reference variety 'Annabelle' (right)

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