Language selection


Flames of Passion


Denomination: 'Flames of Passion'
Botanical Name: Geum rivale
Applicant/Holder: Oudolf, Petrus Hendricus
Broekstraat 17, 6999 De
Breeder: Petrus Hendricus Oudolf, Hummelo, Netherlands
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2002-01-11
Application Number: 02-2964
Grant of Rights Date: 2007-01-24
Certificate Number: 2673
Grant of Rights Termination Date: 2025-01-24

Variety Description

Variety used for comparison: Geum rivale

Summary: 'Flames of Passion' has smaller plants than the species Geum rivale. The stems of 'Flames of Passion' have medium to strong anthocyanin colouration, whereas those of the species have weak anthocyanin. The main distinguishing characteristics of 'Flames of Passion' are the floret size and colour. The candidate variety has large, pink red florets, while the species has smaller, light pinkish white florets.


'Flames of Passion' is a Geum variety which has a mounded plant growth habit. The stems are dark green with moderate pubescence and medium to strong anthocyanin colouration. The leaves are trifoliate, with a long petiole. The terminal leaflet is rhomboidal in shape, with an acute apex and cuneate base. The leaf blade is medium to dark green on the upper side and the margin is serrate.

The inflorescences of 'Flames of Passion' are arranged in a terminal compound corymb with branched peduncles which have very strong anthocyanin colouration. The variety flowers early and has a short flowering period. The florets are dark pink red on the upper side and red pink on the lower side.

Origin & Breeding History: The variety 'Flames of Passion' was selected by the breeder in the Netherlands in 1999. It was a discovered seedling and the parents are unknown. The new cultivar was selected on the basis of its improved floral characteristics.

Tests & Trials: Tests and trials for 'Flames of Passion' were conducted in Oxford Station, Ontario during the summer of 2005. Ten plants of each variety were grown in a garden plot. The plants were spaced approximately 35cm within the row and 30 cm between the rows. All colour determinations were made using the RHS Colour Chart 2001.

Comparison tables for 'Flames of Passion' with reference variety Geum rivale

Plant height (cm)

  'Flames of Passion' Geum rivale
mean 19.05 24.13
std. deviation 3.86 4.57

Plant width (cm)

  'Flames of Passion' Geum rivale
mean 26.80 31.90
std. deviation 4.96 2.73

Diameter of floret (mm)

  'Flames of Passion' Geum rivale
mean 19.40 8.90
std. deviation 2.59 1.20

Colour of petal (RHS)

  'Flames of Passion' Geum rivale
upper side 47B-C N155C
lower side 47D N155C-49D

Click on image for larger view
Flames of Passion
Geum: 'Flames of Passion' (left) with reference variety 'Geum rivale' (right)

Date modified: