Denomination: 'USLOB13'
Trade name: Lavender Blush
Botanical Name: Lobelia
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: 2009-03-27
Application Number: 09-6590
Grant of Rights Date: 2011-05-31
Certificate Number: 4077
Date rights surrendered: 2014-05-31

Variety Description

Variety used for comparison: 'Riviera Lilac'

Summary: The plants of 'USLOB13' have a semi-upright growth habit while the plants of 'Riviera Lilac' have an upright growth habit. The plants of 'USLOB13' are wider than the plants of 'Riviera Lilac'. The stems of 'USLOB13' have dense pubescence while the stems of 'Riviera Lilac' have absent or very sparse pubescence. The upper side of the leaf blade of 'USLOB13' has dense pubescence while the leaf blade of 'Riviera Lilac' has absent or very sparse pubescence. The markings on the lower corolla lobe are small to medium in size for 'USLOB13' while they are medium to large for 'Riviera Lilac'. The palate on the corolla of 'USLOB13' is large is size and white in colour with red-purple markings and light green spots at the base while the palate of 'Riviera Lilac' is small to medium in size and violet in colour.


PLANT: semi-upright growth habit, medium degree of branching, medium to dense foliage
STEM: medium thickness, light green, absent or very weak anthocyanin colouration, dense pubescence

LEAF: alternate arrangement, simple, elliptic, acute apex, attenuate base, dentate to serrate margin, no variegation, upper side medium green, dense pubescence on upper side

SEPAL: narrow lanceolate, no anthocyanin colouration

INFLORESCENCE: raceme, upright attitude, absent or very weak anthocycanin on pedicel
UPPER COROLLA LOBE: cuspidate apex, oblanceolate shape, upper side light blue violet (RHS 76A) with violet (RHS 77B) along midvein, no markings present
LOWER COROLLA LOBE: upper side light blue violet (RHS 76A) with violet (RHS 77B) at tips, markings small to medium in size and violet (RHS N81A) in colour
PALATE: large, white with red purple markings on each lobe, light green (RHS N144A) spots at base.

Origin & Breeding History: The variety 'USLOB13' originated from a cross made on June 17, 2006, in Higashiomi, Shiga, Japan. The female parent was the variety 'Hot White' and the male parent was a blue flowered proprietary seedling designated 06LOBJ-03. The new variety was selected as a single plant from the resultant progeny on May 15, 2007, in Higashiomi, Shiga, Japan. Selection criteria included growth habit, good plant strength, high heat tolerance and consistent flower colour. The variety 'USLOB13' was first propagated by vegetative cuttings on May 16, 2007 in Japan.

Tests & Trials: Trials for 'USLOB13' were conducted in a polyhouse during the spring of 2010 in St. Thomas, Ontario. The trial included a total of fifteen plants of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 11 cm pots on May 6, 2010. Observations and measurements were taken from ten plants or parts of plants on June 7, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'USLOB13' with reference variety 'Riviera Lilac'

Plant width (cm)

  'USLOB13' 'Riviera Lilac'
mean 35.7 20.2
std. deviation 2.08 2.46

Leaf blade width (cm)

  'USLOB13' 'Riviera Lilac'
mean 1.1 0.4
std. deviation 0.17 0.08

Colour of upper corolla lobes (RHS)

  'USLOB13' 'Riviera Lilac'
upper side 76A with 77B along midvein 76B

Colour of lower corolla lobes (RHS)

  'USLOB13' 'Riviera Lilac'
upper side 76A with 77B at tips 76A-B
markings N81A N78A

Click on image for larger view
Lobelia: 'USLOB13' (left) with reference variety 'Riviera Lilac' (right)

Click on image for larger view
Lobelia: 'USLOB13' (left) with reference variety 'Riviera Lilac' (right)

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