Denomination: 'Sunphlorozu'
Trade name: Astoria Hot pink
Botanical Name: Phlox drummondii
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Breeder: Kenichi Kitamura, Suntory Flowers Limited, Shiga, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2008-03-28
Application Number: 08-6246
Grant of Rights Date: 2010-06-01
Certificate Number: 3877
Date rights surrendered: 2011-05-20

Variety Description

Variety used for comparison: 'USPHL03' (Intensia Neon Pink)

Summary: The plants, stem internodes and leaves of 'Sunphlorozu' are shorter than those of 'USPHL03'. 'Sunphlorozu' has dense pubescence on the upper side of the leaf blades while 'USPHL03' has sparse pubescence. The lower side of the leaf blades of 'Sunphlorozu' have medium pubescence while those of 'USPHL03' have absent to very sparse pubescence. The upper side of the leaves of 'Sunphlorozu' are light green while those of 'USPHL03' are medium green. 'Sunphlorozu' has cymes with a smaller diameter and more florets than 'USPHL03'. The florets of 'Sunphlorozu' are star shaped while those of 'USPHL03' are round. 'Sunphlorozu' has petals with a medium fringe on the margin while 'USPHL03' has petals with a strong fringe. The colour on the upper and lower sides of the petals of 'Sunphlorozu' differs from that of 'USPHL03'.


PLANT: annual, bushy to rounded growth habit

LEAF BLADE: lanceolate, glandular stickiness present, dense pubescence on upper side, medium pubescence on lower side, light green on upper side

CYME: dome shaped, compound type
FLORET: star shaped, bicolour, pink colour group
PETAL: broad acute apex, eye pattern present, purple red (RHS N66B) with darker purple red (N66A) tones on upper side, dark purple red (RHS 60A) marking on upper side, blue pink (RHS N66D) on lower side, overlapping
PETAL MARGIN: medium fringe

Origin & Breeding History: 'Sunphlorozu' originated from a naturally occurring bud mutation of '9Ph-17a' discovered in June 2005, at Higashiomi-shi, Shiga-ken, Japan. The discovered shoot was propagated by cuttings, grown in pots in the glasshouse and evaluated. One plant was selected for the stability of its characteristics and named 'Sunphlorozu'.

Tests & Trials: Trials for 'Sunphlorozu' were conducted in a polyhouse during the spring of 2009 in St. Thomas, Ontario. Trials included 15 plants each of the candidate and reference varieties. Rooted cuttings were transplanted into 15 cm pots on April 2, 2009. Observations and measurements were taken from 10 plants of each variety on May 28, 2009. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Sunphlorozu' with reference variety 'USPHL03'

Plant height (cm)

  'Sunphlorozu' 'USPHL03'
mean 16.2 25.4
std. deviation 1.46 2.08

Stem internode length (cm)

  'Sunphlorozu' 'USPHL03'
mean 2.3 3.2
std. deviation 0.37 0.48

Leaf length (cm)

  'Sunphlorozu' 'USPHL03'
mean 3.5 4.6
std. deviation 0.37 0.29

Cyme diameter (cm)

  'Sunphlorozu' 'USPHL03'
mean 8.3 9.0
std. deviation 0.41 0.52

Number of florets per cyme

  'Sunphlorozu' 'USPHL03'
mean 10.2 7.4
std. deviation 1.81 0.84

Color of petal (RHS)

  'Sunphlorozu' 'USPHL03'
upper side more purple than N66B with tones of N66A brighter than N74A with redder tones at the base
marking on upper side 60A 83A with N81A between
lower side N66D to more white towards base 75A to more white towards base

Click on image for larger view
Phlox: 'Sunphlorozu' (left) with reference variety 'USPHL03' (right)

Click on image for larger view
Phlox: 'Sunphlorozu' (left) with reference variety 'USPHL03' (right)

Click on image for larger view
Phlox: 'Sunphlorozu' (left) with reference variety 'USPHL03' (right)

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