King's Ransom


Denomination: 'King's Ransom'
Botanical Name: Brunnera macrophylla
Applicant/Holder: Walters Gardens, Inc.
1992 96th Avenue
P.O. Box 137
Zeeland, Michigan
United States of America
Breeder: Daniel Heims, Portland, 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: 2008-01-18
Application Number: 08-6135
Grant of Rights Date: 2010-12-13
Certificate Number: 3977
Date rights surrendered: 2013-12-13

Variety Description

Variety used for comparison: 'Jack Frost'

Summary: 'King's Ransom' has a narrower leaf blade than 'Jack Frost'. The secondary colour on the upper side of the leaf blade is white to light yellow brown for 'King's Ransom' while it is dark green for 'Jack Frost'. The secondary colour is located on the margin for 'King's Ransom' while it is located on the margin and veins for 'Jack Frost'.


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 192D to 190D), secondary colour white (RHS 157D) to light yellow brown (RHS 158C) with brown green (RHS 138A) veins, secondary colour at margin covering a very 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: 'King's Ransom' originated as a sport of the brunnera variety 'Jack Frost'. It was discovered in the summer of 2004 at Terra Nova Nurseries in Canby, Oregon, 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 'King's Ransom' with reference variety 'Jack Frost'

Leaf blade width (cm)

  'King's Ransom' 'Jack Frost'
mean 11.69 14.06
std. deviation 1.49 1.86

Colour of upper side of leaf blade (RHS)

  'King's Ransom' 'Jack Frost'
main 192D - 190D 194D - 193D
secondary 157D - 158C, veins 138A 137A

Click on image for larger view
King's Ransom
Brunnera: 'King's Ransom' (left) with reference variety 'Jack Frost' (right)

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