Pure Joy

Sedum

Denomination: 'Pure Joy'
Botanical Name: Sedum
Applicant/Holder: Horvath, Brent
10702 Seaman Road
Hebron, Illinois
60034
United States of America
Breeder: Brent Horvath, Hebron, United States of America
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Canada
Tel: 613-258-9015
Application Date: 2012-01-17
Application Number: 12-7475
Grant of Rights Date: 2016-09-16
Certificate Number: 5340
Grant of Rights Termination Date: 2036-09-16

Variety Description

Variety used for comparison: 'Mongolian Stardust'

Summary: The plants of 'Pure Joy' are upright-bushy to bushy-rounded and larger than those of 'Mongolian Stardust', which are spreading. The stem of 'Pure Joy' is light to medium green with an absent or very weak intensity of anthocyanin colouration while that of 'Mongolian Stardust' is purple with a strong intensity of anthocyanin colouration. The stem of 'Pure Joy' has a medium to large diameter while the stem of 'Mongolian Stardust' has a small diameter. The leaf blade of 'Pure Joy' is larger than that of 'Mongolian Stardust'. The upper side of the leaf blade of 'Pure Joy' is brown green to medium green with an absent to very weak intensity of anthocyanin colouration whereas the leaf blade of 'Mongolian Stardust' is brown purple to blue pink with a strong intensity of anthocyanin colouration. The inflorescence of 'Pure Joy' has a larger diameter than that of 'Mongolian Stardust'. The upper and lower side of the petal of 'Pure Joy' is light blue pink while that of 'Mongolian Stardust' is a lighter blue pink.

Description:

PLANT: vegetatively propagated perennial, upright-bushy to bushy-rounded growth habit, medium degree of branching
STEM: light to medium green, absent or very weak intensity of anthocyanin colouration, weak glaucosity, absent or very sparse pubescence, medium to large diameter, smooth

LEAF: opposite arrangement along stem, simple type, oblanceolate shape, acute apex, attenuate base, serrate margin, no variegation, no petiole
LEAF BLADE (UPPER SIDE): absent or very sparse pubescence, weak glaucosity, brown green (RHS 139C) to medium green (RHS 143C-D), absent or very weak intensity of anthocyanin colouration
LEAF BLADE (LOWER SIDE): absent or very sparse pubescence

FLOWERING PERIOD: late in the season, medium to long
INFLORESCENCE: cyme type, terminal position only, erect attitude
FLOWER: petal arrangement is very open, very few petals
PETAL: small, ovate shape, acute apex, absent or very weakly recurved tip, margin is entire
PETAL (UPPER SIDE): light blue pink (RHS 62C-D)
PETAL (LOWER SIDE): light blue pink (RHS 62D), absent or very sparse pubescence

Origin & Breeding History: 'Pure Joy' originated from an open pollinated cross conducted by Brent Horvath of Intrinsic Perennial Gardens, Inc. in Hebron, Illinois, USA in April 2005. The cross occured between Sedum tatranowii as the female parent, and an unknown male parent. 'Pure Joy' was initially selected for its performance and unique flower colour. The final selection was completed in August 2009.

Tests & Trials: The comparative trial for 'Pure Joy' was conducted outdoors during the summer of 2015 at Variety Rights Management in Oxford Station, Ontario. The trial included a total of 15 plants each of the candidate and reference variety. All plants were grown in 22 cm pots spaced 45 cm apart. Observations and measurements were taken from 10 plants, or parts of plants, of each variety the week of August 24, 2015. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Pure Joy' with reference variety 'Mongolian Stardust'

Plant height (cm)

  'Pure Joy' 'Mongolian Stardust'
mean 22.3 14.2
std. deviation 3.64 1.72

Plant width (cm)

  'Pure Joy' 'Mongolian Stardust'
mean 28.5 22.8
std. deviation 2.88 1.94

Leaf blade length (cm)

  'Pure Joy' 'Mongolian Stardust'
mean 3.9 1.5
std. deviation 0.53 0.14

Leaf blade width (cm)

  'Pure Joy' 'Mongolian Stardust'
mean 1.6 0.5
std. deviation 0.18 0.12

Colour of leaf blade (RHS)

  'Pure Joy' 'Mongolian Stardust'
upper side 139C to 143C-D 186B-C

Inflorescence diameter (cm)

  'Pure Joy' 'Mongolian Stardust'
mean 15.0 5.9
std. deviation 1.76 1.03

Colour of petal (RHS)

  'Pure Joy' 'Mongolian Stardust'
upper side 62C-D 69A-B
lower side 62D 69B

Click on image for larger view
Pure Joy
Sedum: 'Pure Joy' (left) with reference variety 'Mongolian Stardust' (right)

Click on image for larger view
Pure Joy
Sedum: 'Pure Joy' (left) with reference variety 'Mongolian Stardust' (right)

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