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APPLICATIONS UNDER EXAMINATION HEUCHERA

Plant Varieties Journal, October 2018, No. 109

Proposed denomination: ‘Silver Gumdrop’

Application number: 16-9046

Application date: 2016/12/02

Applicant: Walters Gardens, Inc., Zeeland, Michigan, United States of America

Agent in Canada: Variety Rights Management, Oxford Station, Ontario

Breeder: Hans A. Hansen, Zeeland, Michigan, United States of America

Varieties used for comparison: ‘Rose Quartz’ and ‘Wild Rose’

Summary: The young leaf of ‘Silver Gumdrop’ is grey and brown purple throughout with darker brown purple along the

veins whereas the young leaf of ‘Wild Rose’ is dark purple red throughout. The leaf blade of ‘Silver Gumdrop’ is smaller

than that of ‘Wild Rose’. The fully opened leaf blade of ‘Silver Gumdrop’ is grey throughout with brown purple along veins

whereas ‘Wild Rose’ is brown purple and brown red throughout with black along veins. The flower bud of ‘Silver Gumdrop’

is dark pink red whereas that of both reference varieties is light blue pink. The flower of ‘Silver Gumdrop’ has a semi-

upwards attitude whereas the flower of both reference varieties has a semi-downwards attitude. The outer side of the flower

of ‘Silver Gumdrop’ is purple red whereas the flower of both reference varieties is blue pink.

Description:

PLANT: medium density of foliage

PETIOLE: sparse pubescence, dark purple red (RHS 187B)

YOUNG LEAF BLADE (UPPER SIDE): grey (RHS N187B/C) distributed throughout in a solid or nearly solid pattern over

a large area, brown purple (RHS 184D) distributed throughout in a flushed pattern over a medium sized area, brown purple

(RHS N186C) distributed along veins in a solid or nearly solid pattern over a very small to small area

LEAF BLADE: slightly elongated length to width ratio, rounded apex, medium depth sinus between lobes, very weak

rugosity, medium number of shallow indentations of the margin, weak undulation of the margin

LEAF BLADE (UPPER SIDE): absent or very weak glossiness, absent or very sparse pubescence, grey (RHS N187C)

distributed throughout in a solid or nearly solid pattern over a large area, brown purple (RHS N186C) distributed along veins

in a solid or nearly solid pattern over a very small to small area

LEAF BLADE (LOWER SIDE): brown purple (RHS N186C), sparse pubescence

FLOWERING STEM: upright to semi-upright attitude, dark purple red (RHS 187B), moderately elongated to strongly

elongated length to width ratio of flowering part, medium density of flowers

FLOWER BUD: dark pink red (RHS 53D)

FLOWER: semi-upwards attitude, short to medium length, narrow to medium width, purple red (RHS N57A/B) outer side

Origin and Breeding: ‘Silver Gumdrop’ originated from a controlled cross conducted by the breeder, Hans Hansen, in

Zeeland, Michigan, USA on April 22, 2013. The cross was made between the female parent, an unreleased proprietary hybrid

known only by the code 12-480-11, and the male parent, a proprietary unreleased hybrid known only by the breeder code 11-

520-15. During the fall of 2013, ‘Silver Gumdrop’ was selected for its flower colour, foliage colour, plant growth habit,

number of flowers and vigour. ‘Silver Gumdrop’ was first propagated asexually using stem cuttings in the fall of 2014.

Tests and Trials: The comparative trial for ‘Silver Gumdrop’ was conducted outdoors during the summer of 2018 at Variety

Rights Management in Oxford Station, Ontario. The trial included 20 plants of each variety. The plants were grown in 16 cm

pots with 40 cm spacing between pots under a galvanized steel structure covered with black mesh shade fabric. The

observations and measurements were taken from 10 plants or parts of plants of each variety. All colour determinations were

made using the 2015 Royal Horticultural Society (RHS) Colour Chart.

HEUCHERA

(Heuchera)



Comparison table for ‘Silver Gumdrop’

‘Silver Gumdrop’ ‘Rose Quartz’* ‘Wild Rose’*

Colour of young leaf blade (RHS) colour one 184D 186A 187B/C colour two N186C 187A N/A colour three N187B/C N187B/C N/A

Leaf blade length (cm) mean 7.8 8.0 9.1 std. deviation 0.65 1.58 1.28

Leaf blade width (cm) mean 7.2 6.9 8.1 std. deviation 0.76 0.86 1.07

Colour of fully opened leaf blade (RHS) colour one N186C N186A between N186D and 178D colour two N187C N186D N187A colour three N/A N187B/C N/A

Colour of flower (RHS) bud 53D 70D to 73D 70D to 73D outer side N57A/B N66C N74C

*reference varieties

Heuchera: ‘Silver Gumdrop’ (left) with reference varieties ‘Rose Quartz’ (center) and ‘Wild Rose’ (right)



Heuchera: ‘Silver Gumdrop’ (left) with reference varieties ‘Rose Quartz’ (top) and ‘Wild Rose’(right)

Proposed denomination: ‘Wild Rose’ Application number: 16-9047

Application date: 2016/12/02

Applicant: Walters Gardens, Inc., Zeeland, Michigan, United States of America

Agent in Canada: Variety Rights Management, Oxford Station, Ontario

Breeder: Hans A. Hansen, Zeeland, Michigan, United States of America

Varieties used for comparison: ‘Rose Quartz’ and ‘Silver Gumdrop’

Summary: The young leaf blade of ‘Wild Rose’ is dark purple red throughout whereas the young leaf blade of ‘Rose Quartz’

and ‘Silver Gumdrop’ are grey and brown purple throughout with darker brown purple along the veins. The leaf blade of

‘Wild Rose’ is larger than that of both reference varieties. The fully opened leaf blade of ‘Wild Rose’ is brown purple to

brown red throughout with black along the veins whereas the leaf blade of ‘Rose Quartz’ is grey throughout with brown

purple between the veins and on the margin and black along the veins; and the leaf blade of ‘Silver Gumdrop’ is grey

throughout with brown purple along the veins. The flower bud of ‘Wild Rose’ is light blue pink whereas the bud of ‘Silver

Gumdrop’ is dark pink red. The flower of ‘Wild Rose’ has a semi-downwards attitude whereas the flower of ‘Silver

Gumdrop’ has a semi-upwards attitude. The outer side of the flower of ‘Wild Rose’ is blue pink whereas that of ‘Silver

Gumdrop’ is purple red.

Description:

PLANT: medium to dense foliage

PETIOLE: sparse pubescence, purple (RHS N79C)

YOUNG LEAF BLADE (UPPER SIDE): dark purple red (RHS 187B/C) distributed throughout in a solid or nearly solid

pattern over a very large area

LEAF BLADE: very slightly elongated length to width ratio, rounded apex, medium depth sinus between lobes, very weak

rugosity, medium number of shallow indentations of the margin, weak undulation of the margin

LEAF BLADE (UPPER SIDE): absent or very weak glossiness, sparse pubescence, between brown purple (RHS N186D)

and brown red (RHS 178D) distributed throughout in a solid or nearly solid pattern over a large area, black (RHS N187A)

distributed along veins in a solid or nearly solid pattern over a small to medium sized area

LEAF BLADE (LOWER SIDE): brown purple (RHS N186C), sparse pubescence



FLOWERING STEM: upright to semi-upright attitude, purple (RHS N79C), moderately elongated to strongly elongated

length to width ratio of flowering part, sparse to medium densisty of flowers

FLOWER BUD: light blue pink (RHS 70D/73D)

FLOWER: semi-downwards attitude, short to medium length, narrow to medium width, blue pink (RHS N74C) outer side

Origin and Breeding: ‘Wild Rose’ originated from a controlled cross conducted by the breeder, Hans Hansen, in Zeeland,

Michigan, USA on April 23, 2013. The cross was made between the female parent, an unreleased proprietary hybrid known

only by the code 12-45-01, and the male parent ‘Georgia Plum’. During the fall of 2013, ‘Wild Rose’ was selected for its

flower colour, foliage colour, plant growth habit, number of flowers and vigour. ‘Wild Rose’ was first propagated asexually

using stem cuttings in the fall of 2014.

Tests and Trials: The comparative trial for ‘Wild Rose’ was conducted outdoors during the summer of 2018 at Variety

Rights Management in Oxford Station, Ontario. The trial included 20 plants of each variety. The plants were grown in 16 cm

pots with 40 cm spacing between pots under a galvanized steel structure covered with black mesh shade fabric. The

observations and measurements were taken from 10 plants or parts of plants of each variety. All colour determinations were

made using the 2015 Royal Horticultural Society (RHS) Colour Chart.

Comparison table for ‘Wild Rose’

‘Wild Rose’ ‘Rose Quartz’* ‘Silver Gumdrop’*

Colour of young leaf blade (RHS) colour one 187B/C 186A 184D colour two N/A 187A N186C colour three N/A N187B/C N187B/C

Leaf blade length (cm) mean 9.1 8.0 7.8 std. deviation 1.28 1.58 0.65

Leaf blade width (cm) mean 8.1 6.9 7.2 std. deviation 1.07 0.86 0.76

Colour of fully opened leaf blade (RHS) colour one between N186D and 178D N186A N186C colour two N187A N186D N187C colour three N/A N187B/C N/A

Colour of flower (RHS) bud 70D to 73D 70D to 73D 53D outer surface N74C N66C N57A/B

*reference varieties



Heuchera: ‘Wild Rose’ (right) with reference varieties ‘Rose Quartz’ (center) and ‘Silver Gumdrop’ (left)

Heuchera: ‘Wild Rose’ (right) with reference varieties ‘Rose Quartz’ (top) and ‘Silver Gumdrop’ (left)

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