Hydrangea macrophylla 'Horwack' (Next Generation™ Pistachio Hydrangea)
Botanical Information
Family | Hydrangeaceae |
Genus | Hydrangea |
Species | macrophylla |
Cultivar | 'Horwack' |
Tradmarked Name | Next Generation™ |
Patent Number | PPAF |
Category | Woody |
Type | Shrub (deciduous) |
Details
USDA Hardiness Zone | 6 - 9 |
USDA Hardiness Ref. | |
Canadian Hardiness Zone | 5a - 8a |
Canada Hardiness Ref. | |
RHS Hardiness Zone | H7 - H3 |
RHS Hardiness Ref. | |
Temperature (°C) | -23 - (-4) |
Temperature (°F) | -10 - 25 |
Height | 1 m |
Spread | 1.5 m |
Growth | Medium |
Flowering Period | June, July, August, September, October |
Description and Growing Information
Shape | Forms a rounded mound. |
Cultivation | Grow in partial shade in a moist, well-drained soil. Tends to be more winter hardy than many other H. macrophylla cultivars. |
Pests | Aphids may be an occasional nuisance. |
Habitat | Horticultural origin. |
Flower/Leaf Bud Description | Flower buds tend to form on old wood. |
Leaf Description | Leaves to 15 cm in length, and are glossy green. |
Flower Description | Flowers appear in dense clusters often starting green tinged chartreuse then developing a scarlet red to violet colouring with a chartreuse-green tinge and a small blue eye. |