America Irene Scott

Rose of Sharon

Denomination: 'America Irene Scott'
Trade name: Sugar Tip
Botanical Name: Hibiscus syriacus
Applicant/Holder: Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
United States of America
Breeder: Sharon Gerlt, Independence, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2008-02-15
Application Number: 08-6173
Grant of Rights Date: 2009-08-25
Certificate Number: 3582
Grant of Rights Termination Date: 2027-08-25

Variety Description

Variety used for comparison: 'Meehanii'

Summary: 'America Irene Scott' has a shorter plant height than 'Meehanii'. 'America Irene Scott' has pink flower colour while 'Meehanii' has dark purple red flower colour. Plants of 'America Irene Scott' produce numerous double flowers while plants of 'Meehanii' develop buds that prematurely drop resulting in few to no flowers.


PLANT: upright growth habit, sparse to medium branching, upright branch attitude, brown stem colour

LEAF BLADE: light to medium green with light yellow secondary colour on upper side, ovate, rounded base, acute apex, moderate lobing present, absent to weak undulation of margin, crenate to dentate margin incisions, incisions shallow to medium in depth

FLOWER: mid-season, double, pink, type 2 eye zone, small to medium dark purple-red eye zone, white staminal column, yellow stigma pad
PETALS: strong overlapping, type 2 shape, white primary colour, light blue pink secondary colour at margin and along veins, colour pattern margined and flushed, lower side light blue pink (RHS 56D), absent to very weak serration, weak undulation, fading of colour present.

Origin & Breeding History: 'America Irene Scott' was discovered and developed by the breeder, Sharon Gerlt, in Independence, Missouri, USA, in the summer of 2001. The new variety originated as a chance Hibiscus syriacus seedling and was selected by the breeder for criteria based on variegated foliage, double flower type, pink flower colour and healthy growth. Propagation by softwood cuttings was first conducted in July 2001.

Tests & Trials: 'America Irene Scott' was tested in an outdoor trial during the spring/summer of 2008 in St. Thomas, Ontario. The trial consisted of a total of 8 plants of the candidate variety and 10 plants of the reference variety. All plants were grown from 2 1/2 inch rooted liners and transplanted into 2 gallon containers on June 3, 2007. Plant were transplanted into 3 gallon containers on June 2, 2008. Observations and measurements were taken from each variety on August 5, 2008. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'America Irene Scott' with reference variety 'Meehanii'

Plant height (cm)

  'America Irene Scott' 'Meehanii'
mean 52.8 70.2
std. deviation 2.63 2.77

Colour of petal (RHS)

  'America Irene Scott' 'Meehanii'
upper side - primary N155B 60B-D
upper side - secondary 56B N/A

Click on image for larger view
America Irene Scott
Rose of Sharon: 'America Irene Scott' (left) with reference variety 'Meehanii' (right)

Click on image for larger view
America Irene Scott
Rose of Sharon: 'America Irene Scott' (left) with reference variety 'Meehanii' (right)

Click on image for larger view
America Irene Scott
Rose of Sharon: 'America Irene Scott' (left) with reference variety 'Meehanii' (right)

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