Denomination: 'Shockwave'
Botanical Name: Phlox paniculata
Applicant/Holder: Walters Gardens, Inc.
1992 96th Avenue
P.O. Box 137
Zeeland, Michigan
United States of America
Breeder: Lonette A. Lemberger, Walters Gardens, Inc, Holland, United States of America
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2011-06-06
Application Number: 11-7298
Grant of Rights Date: 2014-11-17
Certificate Number: 4949
Date rights revoked: 2015-11-17

Variety Description

Variety used for comparison: 'David's Lavender'

Summary: The plants of 'Shockwave' are shorter than those of 'David's Lavender'. The leaf of 'Shockwave' is variegated and has medium undulation of the margin whereas that of 'David's Lavender' is not variegated and has no undulation of the margin. The flower of 'Shockwave' has a smaller diameter than that of 'David's Lavender'. The colour of the corolla lobe of 'Shockwave' fades over time while that of 'David's Lavender' does not.


STEM: medium thickness at middle third, absent or very weak anthocyanin colouration, medium length of internode at middle third

LEAF: moderately elongated length to width ratio, broadest part at middle, shape in cross section is flat, acuminate to acute apex, variegation present, absent or weak anthocyanin colouration on upper side, medium undulation of margin

PEDICEL: short to medium length, absent or weak to medium anthocyanin colouration
INFLORESCENCE: many flowers
CALYX: short, absent or weak to medium anthocyanin colouration
FLOWER: perianth present
COROLLA TUBE: medium length, medium diameter just below lobes, light blue violet (RHS 76A)
COROLLA LOBE: medium length and width, obovate, upper side is violet (RHS 75A)
COROLLA EYE: white (RHS N155B-C)
ANTHER: light yellow
STYLE: light yellow to light green

Origin & Breeding History: 'Shockwave' originated from a whole plant non-induced mutation/sport of the Phlox variety 'David's Lavender' and was discovered in the summer of 2009. The plant was selected in 2009 based on its leaf margin variegation. Further propagation by shoot tip cuttings was done at Walter Gardens in Zeeland, Michigan, USA.

Tests & Trials: Trials for 'Shockwave’ were conducted in a polyhouse and then outside under black shade cloth during the summer of 2013 at Variety Rights Management, Oxford Station, Ontario. The trial included a total of 20 plants each of the candidate and reference variety. All plants were grown from bare root plants transplanted into 25 cm pots, spaced 16 cm apart, in early May of 2013. Observations and measurements were taken from 10 plants of each variety in September of 2013. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Shockwave' with reference variety 'David's Lavender'

Plant height (cm)

  'Shockwave' 'David's Lavender'
mean 46.11 68.78
std. deviation 3.95 7.56

Flower diameter (mm)

  'Shockwave' 'David's Lavender'
mean 9.24 12.67
std. deviation 0.52 0.93

Click on image for larger view
Phlox: 'Shockwave' (left) with reference variety 'David's Lavender' (right)

Click on image for larger view
Phlox: 'Shockwave' (left) with reference variety 'David's Lavender' (right)

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