Emerald Mist


Denomination: 'Emerald Mist'
Botanical Name: Brunnera macrophylla
Applicant/Holder: Walters Gardens, Inc.
1992 96th Avenue
P.O. Box 137
Zeeland, Michigan
United States of America
Breeder: Michael G. Kwantes, Walters Gardens, Inc., Allegan, 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: 2007-12-27
Application Number: 07-6127
Grant of Rights Date: 2010-12-13
Certificate Number: 3976
Date rights surrendered: 2013-12-13

Variety Description

Variety used for comparison: 'Langtrees'

Summary: 'Emerald Mist' has a narrower plant width than 'Langtrees'. 'Emerald Mist' has a shorter and narrower leaf blade than 'Langtrees'. The main colour of the upper side of the leaf blade is green grey for 'Emerald Mist' while it medium green for 'Langtrees'. The secondary colour on the upper side of the leaf blade is brown green for 'Emerald Mist' while it is green grey for 'Langtrees'.


PLANT: mounded growth habit, sparse branching
STEM: medium green, absent or very weak anthocyanin colouration, absent or very weak glaucosity, dense pubescence, narrow diameter, striate shape

LEAF: simple, reniform, acute to acuminate apex, cordate base, entire margin
UPPER SIDE: dense pubscence, absent or very weak glaucosity, variegation present, main colour green grey (RHS 189C-D), secondary colour brown green (RHS 191A to 137B) located on margin and veins, secondary colour covering a small surface area
LOWER SIDE: medium to dense pubescence, light green
PETIOLE: present

INFLORESCENCE: flowers once, early season, short flowering time, cyme type, terminal in location, erect attitude
PETALS: touching, five, rounded shape, upper side light blue (RHS 106B-C)

Origin & Breeding History: 'Emerald Mist' originated as a sport of the brunnera variety 'Jack Frost'. It was discovered in the spring of 2002 at Walters Gardens Inc. in Zeeland, Michigan, USA.

Tests & Trials: Trials were conducted during the spring/summer of 2009 in Oxford Station, Ontario. Fifteen plants of each variety were grown in 15 cm pots in a polyhouse. Plants were spaced approximately 60 cm apart. Observations and measurements were taken on 10 plants of each variety. Colours were determined using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Emerald Mist' with reference variety 'Langtrees'

Plant width (cm)

  'Emerald Mist' 'Langtrees'
mean 32.38 38.13
std. deviation 2.39 1.56

Leaf blade length (cm)

  'Emerald Mist' 'Langtrees'
mean 14.06 16.19
std. deviation 0.72 0.96

Leaf blade width (cm)

  'Emerald Mist' 'Langtrees'
mean 13.44 15.88
std. deviation 1.08 1.22

Colour of upper side of leaf blade (RHS)

  'Emerald Mist' 'Langtrees'
secondary 191A to 137B 189C-D

Click on image for larger view
Emerald Mist
Brunnera: 'Emerald Mist' (left) with reference variety 'Langtrees' (right)

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