Denomination: 'USPHL0419'
Trade name: Intensia Cabernet
Botanical Name: Phlox
Applicant/Holder: Plant 21 LLC
32149 Aquaduct Road
Bonsall, California
United States of America
Breeder: Ushio Sakazaki, Shiga, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-05-06
Application Number: 05-4886
Grant of Rights Date: 2007-06-08
Certificate Number: 2806
Date rights surrendered: 2017-05-19

Variety Description

Variety used for comparison: 'Sunphlocarma' (Astoria Magenta)

Summary: USPHLO419' has a slightly wider plant than 'Sunphlocarma'. The leaf of 'USPHLO419' is slightly longer than 'Sunphlocarma'. 'USPHLO419' has a broad acute shape of the flower petal apex while it is cuspidate in 'Sunphlocarma'. The flower petal colour of 'USPHLO419' is a redder and slightly darker purple than 'Sunphlocarma'.


PLANT: annual type, semi-upright growth habit, flowers early in the season

LEAF: subulate shape, glandular stickiness present, dense pubescence on upper and lower side, medium green colour

INFLORESCENCE: flat shaped, compound cyme type
FLORET: star shape, tricoloured (including eye), purple-red colour group
PETAL: broad acute shaped apex, weak to medium fringing of the margin, purple (RHS N74A) apical zone on upper side, dark purple red (RHS 53A) basal zone, v-shaped markings at base of petal that is brown purple to violet (RHS N77A to N82A), white (RHS 155C) apical zone on lower side with purple to blue-pink (RHS N74B-C) margins, white (RHS 155C) basal zone on lower side.

Origin & Breeding History: 'USPHLO419' is the product of a planned breeding program with the objectives to create new vigorous Phlox varieties that are heat tolerant and have a long flowering period. 'USPHLO419' originated from a controlled cross conducted in Hikone, Japan on March 29, 2001 with a seed raised Phlox drummondii variety with scarlet flowers as the female parent and a wild Phlox sp. as the male parent. The new phlox was selected as a single plant from the resultant progeny on May 24, 2002. Selection criteria included strong plant vigour, tolerance to heat, long flowering period and low seed set.

Tests & Trials: Tests and trials were conducted in a polyhouse during the spring of 2006 in St. Thomas, Ontario. Trials included 15 plants each of the candidate and reference variety. Observations and measurements were taken from 10 plants. All colour measurements were made using RHS colour chart 2001.

Comparison tables for 'USPHL0419' with reference variety 'Sunphlocarma'

Plant width (cm)

  'USPHL0419' 'Sunphlocarma'
mean 42.4 38.0
std. deviation 2.43 2.66

Leaf length (cm)

  'USPHL0419' 'Sunphlocarma'
mean 3.8 3.2
std. deviation 0.60 0.27

Petal colour (RHS)

  'USPHL0419' 'Sunphlocarma'
upper apical zone redder than N74A darker than N74A
upper basal zone 53A 53A
eye zone v-shaped markings of N77A to N82A v-shaped markings of N81A to N82A
lower apical zone 155C with N74B-C near margins 155C with N74B-C near margins
lower basal zone 155C 155C

Click on image for larger view
Phlox: 'USPHLO419' (left) with reference variety 'Sunphlocarma' (right)

Click on image for larger view
Phlox: 'USPHLO419' (left) with reference variety 'Sunphlocarma' (right)

Date modified: