Orange Field


Denomination: 'Orange Field'
Botanical Name: Bistorta amplexicaulis
Applicant/Holder: Ghyselen, Chris
Tinhoutstraat 36
8730 Oedelem
Breeder: Chris Ghyselen, Beernhem, Belgium
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2006-03-17
Application Number: 06-5329
Grant of Rights Date: 2010-12-13
Certificate Number: 3982
Grant of Rights Termination Date: 2028-12-13

Variety Description

Variety used for comparison: 'Blackfield'

Summary: 'Orange Field' has a taller plant height and wider plant width than 'Blackfield'. 'Orange Field' has a longer inflorescence length than 'Blackfield'. 'Orange Field' has dark red pink to red pink floret colour while 'Blackfield' has dark purple red floret colour.


PLANT: upright to spreading growth habit, medium degree of branching
STEM: medium green, absent or very weak anthocyanin colouration, absent or very weak glaucosity, absent or very sparse pubescence

LEAF: alternate arrangement, simple, ovate, acute apex, cordate base, irregular serrate margin, margin slightly wavy
UPPER SIDE: sparse pubescence, medium to dark green, no variegation
LOWER SIDE: very sparse pubescence, medium green
PETIOLE: medium length, absent to very weak anthocyanin colouration

FLOWERING: almost continuous, mid-season
INFLORESCENCE: raceme, dense, terminal in position, erect attitude
FLORET: dark pink red (RHS 47C) to red pink (RHS 47D to 43D), small

Origin & Breeding History: 'Orange Field' originated from a cross between two unnamed bistort selections, made in 2001 in Oedelem, Belgium. The objective of the breeding program was to create new bistort varieties with improved floral colours and good plant habits.

Tests & Trials: Trials were conducted during the summer of 2009 in Oxford Station, Ontario. Eleven plants of 'Orange Field' and fifteen plants of 'Blackfield' 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 'Orange Field' with reference variety 'Blackfield'

Plant height (cm)

  'Orange Field' 'Blackfield'
mean 77.14 65.14
std. deviation 4.02 2.91

Plant width (cm)

  'Orange Field' 'Blackfield'
mean 73.17 60.17
std. deviation 4.79 5.74

Inflorescence length (cm)

  'Orange Field' 'Blackfield'
mean 10.35 7.25
std. deviation 1.44 0.85

Colour of floret (RHS)

  'Orange Field' 'Blackfield'
colour chart number 47C-D to 43D 53B to 60A

Click on image for larger view
Orange Field
Bistort: 'Orange Field' (left) with reference variety 'Blackfield' (right)

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