Cal Britreeda


Denomination: 'Cal Britreeda'
Trade name: Callie Bright Red
Botanical Name: Calibrachoa
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Robert Pierce, Watsonville, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2004-03-12
Application Number: 04-4107
Grant of Rights Date: 2006-11-09
Certificate Number: 2615
Date rights surrendered: 2015-11-09

Variety Description

Variety used for comparison: 'Sunbelre' (Million Bells Red)

Summary: 'Cal Britreeda' produces a larger plant that has a more upright growth habit than 'Sunbelre'. The shoot of 'Cal Britreeda' is longer than in 'Sunbelre'. 'Cal Britreeda' has a stronger anthocyanin of the pedicel than 'Sunbelre'. The degree of lobing of the corolla in 'Cal Britreeda' is stronger than in 'Sunbelre'. 'Cal Britreeda' has stronger conspicuousness of the veins on the corolla lobe and inside the corolla tube than 'Sunbelre'. The undulation of the corolla lobe margin of 'Cal Britreeda' is weaker than 'Sunbelre'.


'Cal Britreeda' is a tall calibrachoa variety with a semi-upright growth habit. The shoots are medium to thick in thickness, and long to very long in length with medium to strong anthocyanin present. The leaves are medium to dark green, elliptic to obovate in shape, with a narrow acute apex. There is no variegation present on the leaf blade. The sepals are lanceolate in shape with anthocyanin present. 'Cal Britreeda' produces single, funnelform, red flowers. The corolla has weak to medium lobing with weak undulation of the margin and moderately conspicuous red mid veins. The corolla lobe apex is truncate. The inside of the corolla tube is yellow and has veins of strong conspicuousness. Anther colour is yellow.

Origin & Breeding History: 'Cal Britreeda' was developed by the breeder, Robert Osteen Pierce, of Goldsmith Seeds Inc., Gilroy, California. 'Cal Britreeda' originated from a cross made in June 2001, in a greenhouse in Gilroy, California, of the calibrachoa selection '44-1' as the female parent with the calibrachoa selection '252-1' as the male parent. The F1 seed was sown in a greenhouse in July 2001. In October 2001, a single plant was selected based on flower colour, form, and plant habit.

Tests & Trials: Tests and trials for 'Cal Britreeda' were conducted in a polyhouse during the summer of 2005 in St. Thomas, Ontario. Trials included a total of 18 plants of each variety. Plants were grown from rooted cuttings transplanted into 25 cm baskets on May 27, 2005. Each basket contained 3 cuttings with a total of six baskets per variety. All colour characteristics were determined using the 2001 RHS colour chart and measured characteristics were based on ten plant measurements.

Comparison tables for 'Cal Britreeda' with reference variety 'Sunbelre'

Plant height (cm)

  'Cal Britreeda' 'Sunbelre'
mean 32.0 26.5
std. deviation 3.64 1.51

Shoot length (cm)

  'Cal Britreeda' 'Sunbelre'
mean 38.3 18.7
std. deviation 2.96 2.60

Corolla colour (RHS)

  'Cal Britreeda' 'Sunbelre'
upper side 50A-46C with tones of N57B 50A-46C with tones of N57B
lower side N57C-D N57C-D
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