Doughill
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
TIMOTHY D WOOD
Variety traits
Winter Hardiness of Oakleaf Hydrangea
Hydrangea quercifolia W. Bartram
The winter hardiness of oakleaf hydrangea is determined by the LT50 value and ranges from -23 to -30 °C, corresponding to USDA zones 5–9. The crop is characterized by moderate frost resistance, with flower buds at risk of damage at temperatures below -20 °C.
In the reference 12 varieties crop Oakleaf hydrangea, where this is mentioned in the description.
To assess the frost tolerance of this species, the controlled freezing method is used, which allows for the determination of the median lethal temperature (LT50). Research tracks the plant's acclimation dynamics between October and April. Compared to other members of the genus, the oakleaf hydrangea occupies an intermediate position, being less hardy than Hydrangea paniculata but more hardy than Hydrangea macrophylla.
Cultivation technology in temperate climates accounts for the sensitivity of generative buds to critical temperatures and the necessity of protecting young specimens. Practical application includes mandatory covering of bushes in regions north of their natural range, the selection of wind-protected sites, and the sanitary pruning of frost-damaged shoots in the spring, as the plant's overall winter hardiness increases with age.
General information about the subject — on the page Winter hardiness.
Varieties of Oakleaf hydrangea mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Brother Edward
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
TIMOTHY D WOOD
Flemygea
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Flemer
FR
NL
2 records
HQOPR010
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Plant Select N.V.
BIV01
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Tara Bivin
Snowcicle
Application submittedHydrangea quercifolia W. Bartram · Oakleaf hydrangea
RICHARD DAVIS
Back Porch
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Louisiana Nursery
FR
1 record
Semmes Beauty
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
No information of breeder available for this variety
FR
1 record
Burgundy
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Bulk M. & R.
FR
1 record
Alice
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Dirr M.
FR
1 record
Tennessee
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :De Belder R. & J.
FR
1 record
Applause
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Bulk M. & R.
FR
1 record
Luverne Pink
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Louisiana Nursery
FR
1 record
Harmony
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :McDaniel T. A.
FR
1 record
Munchkin
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Reed S. M.
FR
1 record
Pee Wee
ActiveHydrangea quercifolia W. Bartram · Oakleaf hydrangea
No information of breeder available for this variety
FR
1 record