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Denomination: 'Poulcas031'
Trade name: Avila
Botanical Name: Rosa
Applicant/Holder: Poulsen Roser A/S
Kratbjerg 332
Breeder: Mogens N. Olesen, Poulsen Roser A/S, Fredensborg, Denmark
Agent in Canada: Miller Thomson Pouliot LLP
1000 De La Gauchetière Street West, Suite 3700
Montréal, Quebec
H3B 4W5
Tel: 514-871-5449
Application Date: 2010-12-09
Application Number: 10-7107
Grant of Rights Date: 2014-05-01
Certificate Number: 4759
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2016-05-01
Date rights surrendered: 2015-05-11

Variety Description

Variety used for comparison: 'Poulthe' (Topkapi)

Summary: The leaf of 'Poulcas031' is shorter than that of 'Poulthe'. There are fewer petals on the flower of 'Poulcas031' than that of 'Poulthe'. The colour on the inner side of the petal of 'Poulcas031' is purple red while it is purple red with white streaks for 'Poulthe'. The basal spot on the inner side of the petal of 'Poulcas031' is smaller than that of 'Poulthe'.


PLANT: shrub type, semi upright growth habit
YOUNG SHOOT: no anthocyanin colouration
PRICKLES: medium number, greenish

NEW LEAF: weak anthocyanin colouration on upper side
LEAF: medium green on upper side, no anthocyanin colouration, weak glossiness on upper side, absent or very weak undulation of margin
TERMINAL LEAFLET: medium elliptic, rounded base, acuminate apex

FLOWERING SHOOT: few flowering laterals, medium number of flowers per lateral
FLOWER BUD: medium ovate shape in longitudinal section
FLOWER: double type, pink colour group, medium petal density, irregularly rounded, flattened convex profile on upper part, concave profile on lower part, absent or weak fragrance, absent or very weak sepal extensions
PETAL: no reflexing, obovate to rounded, absent or very weak incisions, medium reflexing of margins, absent or very weak undulation of the margin, one colour on inner side, colour intensity even, inner side purple red (RHS N57A-B)
BASAL SPOT: small, light yellow with white inner side
OUTER STAMEN: light yellow filament

Origin & Breeding History: 'Poulcas031' originated from a controlled crossing between two unnamed seedlings, and is a selection of one seedling among these resulting plants. The cross was made in the summer of 1997. Seeds were planted in December, 1997 and germinated during the winter and early spring. In the spring on 1998 the seedlings were selected in our greenhouses in Fredensborg, Denmark. 'Poulcas031' was selected by the breeder based on its compact yet vigorous growth when propogated on own root, profusion of deep pink flowers and resistance to typical rose diseases.

Tests & Trials: Trials for 'Poulcas031' were conducted in an outdoor trial during the summer of 2012 at BioFlora Inc. in St. Thomas, Ontario. Trials included 10 plants of the candidate variety and 6 plants of the reference variety. Plants were grown from bare-rooted plants, transplanted into 13.2 litre containers in April, 2012. Observations and measurements were taken from 10 plant parts of each variety on July 17, 2012. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Poulcas031' with reference variety 'Poulthe'

Leaf length (cm)

  'Poulcas031' 'Poulthe'
mean 11.3 13.8
std. deviation 0.96 1.29

Number of flower petals

  'Poulcas031' 'Poulthe'
mean 48.0 71.3
std. deviation 7.87 10.92

Petal width (cm)

  'Poulcas031' 'Poulthe'
mean 2.3 2.6
std. deviation 0.19 0.12

Colour of inner side of petal (RHS)

  'Poulcas031' 'Poulthe'
main N57A-B more pink than 58C
secondary N/A streaks of NN155B

Click on image for larger view
Rose: 'Poulcas031' (left) with reference variety 'Poulthe' (right)

Click on image for larger view
Rose: 'Poulcas031' (left) with reference variety 'Poulthe' (right)

Click on image for larger view
Rose: 'Poulcas031' (left) with reference variety 'Poulthe' (right)

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