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Denomination: 'Scarletta'
Trade name: Tukana Scarlet Improved
Botanical Name: Glandularia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Har Stemkens, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2006-11-09
Application Number: 06-5667
Grant of Rights Date: 2008-08-29
Certificate Number: 3338
Date rights surrendered: 2014-07-11

Variety Description

Varieties used for comparison: 'Scarlena' (Magalena Ultra Scarlet) and 'Sunmarired' (Temari Red)

Summary: The plants of 'Scarletta' are taller and narrower with a more upright growth habit than those of 'Scarlena'. The lobes of the corolla are not touching for 'Scarletta' while they are touching for 'Sunmarired'. The upper side of the corolla of 'Scarletta' is orange red while it is more orange with faded corolla lobe apices for 'Scarlena' and red with a darker red centre for 'Sunmarired'. The tip of the hairs protruding from the corolla tube is white with a pink blotch for 'Scarletta' while it is mostly pink for 'Sunmarired'.


PLANT: upright to semi-upright growth habit, tall to very tall, narrow to medium width
STEM: very light green, moderate to strong anthocyanin colouration on middle third, dense pubescence

LEAF BLADE: long, medium width, ovate, cuneate base, not divided, dentate margin, medium green on upper side, no anthocyanin colouration on upper side
PETIOLE: medium length

INFLORESCENCE: large diameter, broad ovate in profile
CALYX: anthocyanin colouration on tips of teeth only
COROLLA: medium diameter, one coloured, shaded colour pattern, lighter colour towards apex of corolla lobes, orange red on upper side, no colour change with age, red fading to white towards base of corolla lobes on lower side
COROLLA LOBES: not touching, straight to incurved along longitudinal axis, weak to medium undulation of margin
COROLLA TUBE: medium to long, tip of protruding hairs is white with a pink blotch

Origin & Breeding History: 'Scarletta' was developed by the breeder, Har Stemkens, an employee of Syngenta Seeds B.V. in Enkhuizen, The Netherlands. It was discovered in May 2001 as a mutation of the Verbena hybrida variety 'Scarlena'. Selection of 'Scarletta' was based on its flower colour and mildew resistance.

Tests & Trials: Trials for 'Scarletta' were conducted in a poly-house during the spring of 2007 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of fifteen (15) plants per variety. All plants were grown from rooted cuttings transplanted into 11.5 cm pots on May 4, 2007. Measured characteristics were based on measurements taken from ten (10) plants or parts of plants. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Scarletta' with reference varieties 'Scarlena' and 'Sunmarired'

Plant height (cm)

  'Scarletta' 'Scarlena' 'Sunmarired'
mean 17.5 11.9 15.7
std. deviation 1.92 1.68 2.42

Plant width (cm)

  'Scarletta' 'Scarlena' 'Sunmarired'
mean 43.2 56.9 41.6
std. deviation 2.93 4.29 6.23

Colour of corolla (RHS)

  'Scarletta' 'Scarlena' 'Sunmarired'
upper side more orange than 45B more orange than 45B with fading to 46C at apex of lobes when aged 45B with 46B centre
lower side 46C fading to white towards base of lobes 46C fading to white towards base of lobes 46D

Click on image for larger view
Verbena: 'Scarletta' (left) with reference varieties 'Scarlena' (centre) and 'Sunmarired' (right)

Click on image for larger view
Verbena: 'Scarletta' (left) with reference varieties 'Scarlena' (centre) and 'Sunmarired' (right)

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