Anna van Vloten

Cedar

Variety Description

Variety used for comparison: 'Golden Globe'

Summary: The plants of 'Anna van Vloten' have dense foliage with branches of medium stiffness whereas the plants of 'Golden Globe' have very dense foliage with stiff branches. The branch of the first order of 'Anna van Vloten' is larger than the branch of the first order of 'Golden Globe'. The leaf of 'Anna van Vloten' is longer than the leaf of 'Golden Globe'. In spring, the main colour of the outer side of the leaf of 'Anna van Vloten' is light yellow with a yellow brown tip whereas the leaf of 'Golden Globe' is light yellow with a yellow apex and yellow brown tip. In summer, the main colour of the outer side of the leaf from the upper part of the outermost branches of 'Anna van Vloten' is yellow orange with light yellow at the apex fading to yellow orange to light yellow on the leaf located towards the lower part of the outermost branches whereas the outer side of the leaf from the upper part of the outermost branches of 'Golden Globe' is darker yellow orange with light yellow at the apex and does not fade on the leaf located towards the lower part of the outermost branches.

Description:

SHRUB: evergreen type, absent or very weak fragrance, globose shape, dense foliage, yellow colour group, many branches

BRANCH: erect attitude, medium degree of stiffness, dark brown when aged
BRANCHLET OF FIRST ORDER: medium to dense second order branchlets, light green and yellow stem
BRANCHLET OF SECOND ORDER: medium density of third order branchlets

LEAF: decussate arrangement around axis of branchlet, scale-like shape, adpressed attachment, upright to semi-upward attitude, acuminate shape of apex, entire margin, involute margin fold
LEAF IN SPRING (OUTER SIDE): main colour is light yellow (RHS 10A-C) with yellow brown (RHS 165B) at tip changing to dark to light green (RHS 144A-B) on leaf located towards lower part of branchlet
LEAF FROM UPPER PART OF OUTERMOST BRANCHES IN SUMMER (OUTER SIDE): main colour is yellow orange (RHS 13B) with light yellow (RHS 10C) apex
LEAF FROM MIDDLE PART OF OUTERMOST BRANCHES IN SUMMER (OUTER SIDE): main colour is yellow orange to light yellow (RHS 11A-B)
LEAF FROM LOWER PART OF OUTERMOST BRANCHES IN SUMMER (OUTER SIDE): main colour is light green (RHS 144B) changing to dark green (RHS 143C) on leaf located towards inner part of branches
LEAF FROM INNER PART OF BRANCHES IN SUMMER (OUTER SIDE): brown green (RHS 137B-C)

Origin & Breeding History: 'Anna van Vloten' was discovered and developed by the breeder, Casey van Vloten of Abbotsford, British Columbia, Canada. It was discovered as a naturally occurring branch mutation of the Thuja occidentalis variety 'Danica' in 1993, in Abbotsford. 'Anna van Vloten' was selected during that same year for its plant growth habit, winter and summer foliage colour, and plant hardiness. It was first asexually propagated by hardwood cuttings in October 2000 in Abbotsford, British Columbia, Canada.

Tests & Trials: The comparative trial of 'Anna van Vloten' was conducted as an outdoor irrigated container trial during the summer of 2014 and spring of 2015 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 12 shrubs each of the candidate and reference variety. All shrubs were grown from 5.5 cm liners that were each planted into a 9 litre container on June 7, 2013 for the candidate variety and on June 14, 2013 for the reference variety. The trial was arranged in rows with approximately 60 cm spacing between plants. Observations and measurements were taken from 10 shrubs or parts of shrubs on August 25, 2014, except spring observations and measurements which were taken on April 14, 2015. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Anna van Vloten' with reference variety 'Golden Globe'

Length of branchlet of first order (cm)

Width of branchlet of first order (cm)

Leaf length (mm)

Main colour of leaf in spring (RHS)

Colour of leaf from upper part of outermost branches in summer (RHS)

Colour of leaf from lower part of outermost branches in summer (RHS)

Colour of leaf from inner part of branches in summer (RHS)

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Cedar: 'Anna Van Vloten' (left) with reference variety 'Golden Globe' (right)

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Cedar: 'Anna Van Vloten' (left) with reference variety 'Golden Globe' (right)

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Cedar: 'Anna Van Vloten' (left) with reference variety 'Golden Globe' (right)