|Trade name:||Gatsby's Star|
|Botanical Name:||Hydrangea quercifolia|
Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
United States of America
Doug Hill, Cleveland, United States of America
Brenda Hill, Cleveland, United States of America
|Agent in Canada:||
38723 Fingal Line
St. Thomas, Ontario
|Grant of Rights Date:||2016-08-26|
|Grant of Rights Termination Date:||2036-08-26|
Variety used for comparison: 'Snowflake'
Summary: The calyx of the sterile flower of 'Doughill' is smaller in diameter than the calyx of 'Snowflake'. The sepal of the sterile flower of 'Doughill' is shorter than the sepal of 'Snowflake'. The number of sepals per sterile flower is many for 'Doughill' whereas the sepals per sterile flower are medium in number for 'Snowflake'. The degree of overlapping of the sepals of the sterile flower is strong for 'Doughill' whereas the overlapping is of medium degree for the sepals of 'Snowflake'. When newly open, the inner side of the sepal of the sterile flower is yellow green for 'Doughill' whereas the sepal of 'Snowflake' is lighter yellow green. When fully open, the inner side of the sepal of the sterile flower is yellow green for 'Doughill' whereas the sepal is white for 'Snowflake' with the exception of the sepals located at the centre of the flower which are yellow green.
PLANT: non-climbing type, upright to spreading growth habit, begins flowering early to mid-season
STEM: no fasciation, brownish, many lenticels, light brown lenticels
LEAF BLADE: lobing present, short tip, shallow incisions of margin, no variegation, medium green upper side, absent or weak degree of glossiness, weak blistering between veins
INFLORESCENCE: conical shape, moderately conspicuous fertile flowers
STERILE FLOWER: double type, many sepals, strong degree of overlapping of sepals, incisions of margin are absent on all sepals
SEPAL OF STERILE FLOWER (INNER SIDE): yellow green (RHS 150B-C) when newly open, yellow green (RHS 150D) when fully open, no secondary colour
Origin & Breeding History: 'Doughill' was discovered and developed by the breeders, Doug Hill and Brenda Hill, in Cleveland, Alabama, USA. It originated from an open pollinated cross that occurred in 1988 between Hydrangea quercifolia, as the female parent, and an unknown male parent. 'Doughill' was selected in 1990 for its plant health, abundant sterile flowers, a full inflorescence, and unique sterile flower form. Asexual reproduction of 'Doughill' by softwood cuttings was first conducted in July 2004 in Cleveland, Alabama, USA.
Tests & Trials: The comparative trial for 'Doughill' was conducted in a polyhouse during the spring of 2015 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 10 shrubs each of the candidate and reference variety. All shrubs were grown from rooted cuttings and transplanted into 13.2 litre containers on June 19, 2013. Observations and measurements were taken from 10 plants or parts of plants of each variety on June 11, 2015. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.
Comparison tables for 'Doughill' with reference variety 'Snowflake'
Diameter of calyx of sterile flower (cm)
Length of sepal of sterile flower (cm)
Colour of inner side of sepal of sterile flower (RHS)
|fully open||150D||155C, but 1C on sepals at centre of flower|
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