Thusid2

Cedar

Denomination: 'Thusid2'
Botanical Name: Thuja occidentalis
Applicant/Holder: Sidhu, Gurjit
9623 Sylvester Road
Mission, British Columbia
V2V 7K6
Canada
Breeder: Gurjit Sidhu, Mission, British Columbia
Application Date: 2012-06-08
Application Number: 12-7632
Grant of Rights Date: 2014-05-09
Certificate Number: 4766
Grant of Rights Termination Date: 2032-05-09

Variety Description

Variety used for comparison: 'Thusid1'

Summary: The plants of 'Thusid2' have a columnar shape whereas those of 'Thusid1' are narrow pyramidal in shape. The plants of 'Thusid2' are wider than those of 'Thusid1'. The branches of 'Thusid2' are semi-erect whereas those of 'Thusid1' are erect. The branches of the first order of 'Thusid2' are wider than those of 'Thusid1'.

Description:

PLANT: columnar, medium foliage density, medium green colour group
BRANCH: medium density, semi-erect attitude, medium stiffness, brown

SPRAY: branchlets along first order branchlet medium density, branchlet of first order medium green, anthocyanin colouration of stem of branchlet of first order absent or very weak, third order branchlets along second order branchlets medium density

LEAF: arranged in opposite pairs around the axis of the branchlet, scale like, appressed, acute apex, entire margin, flat margin, upper side in spring is dark green to brown green (RHS N138A-B) with green brown (RHS 151A-B) and green brown (RHS 153D) at tips of branchlets, lower side in spring is brown green (RHS 138A-B) with green brown (RHS 151A-B) and green brown (RHS 153D) at tips of branches, upper and lower side in summer is brown green (RHS 137C) with light green (RHS 144B-C) at tips

Origin & Breeding History: The variety 'Thusid2' originated as a whole plant mutation of the variety 'Brandon'. The mutation was discovered in the spring of 2007 in Mission, British Columbia, Canada. The new variety was selected based on the yellow colour of the new foliage. Propagation by stem cuttings was first conducted in winter of 2007.

Tests & Trials: Trials for 'Thusid2' were conducted in an outdoor irrigated container trial during the spring of 2013 in St. Thomas, Ontario. The trial included a total of 12 plants of the candidate variety and 8 plants of the reference variety. All plants were grown from bare-rooted plants planted in 3.8 litre containers in June 2012. Observations and measurements were taken on May 7, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Thusid2' with reference variety 'Thusid1'

Plant width (cm)

  'Thusid2' 'Thusid1'
mean 33.3 21.7
std. deviation 2.67 3.32

Width of branch of the first order (cm)

  'Thusid2' 'Thusid1'
mean 12.1 8.3
std. deviation 1.10 0.93

Click on image for larger view
Thusid2
Cedar: 'Thusid2' (left) with reference variety 'Thusid1' (right)

Click on image for larger view
Thusid2
Cedar: 'Thusid2' (left) with reference variety 'Thusid1' (right)

Click on image for larger view
Thusid2
Cedar: 'Thusid2' (left) with reference variety 'Thusid1' (right)

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