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Woody > Hydrangea > Hydrangea aspera > Hydrangea aspera subsp. sargentiana

Hydrangea aspera

ssp. sargentiana


Sargent Hydrangea




Origin:  Western Hubei province, China. Aspera means 'rough textured' and refers to the coarse textured leaves of the plant.
            Mike's Opinion

this is Mike

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H. aspera subsp. sargentiana is a broad spreading, medium to large sized shrub with pale blue and pink flowers that contrast nicely against the dark green-grey foliage. The plant will reach full size under good growing conditions in about 10 years.



Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)

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Family
Hydrangeaceae
Genus
Hydrangea
Species
aspera
Category
Woody
Type
Shrub (deciduous), Shrub (evergreen)
Subspecies
sargentiana
Synonyms
Hydrangea sargentiana
USDA Hardiness Zone
7-9
Canadian Hardiness Zone
5a-8a
RHS Hardiness Zone
H3 – H7 (with some protection)
Temperature (°C)
-15 to 30
Temperature (°F)
5 to 86
Height
3 m
Spread
2.5 m
Photographs
Description and Growing Information
Flowering Period
JulyAugustSeptember
Cultivation
Grow in well drained but slightly moist soils in partial shade.
Shape
A broad spreading low growing shrub.
Growth
Fast
Habitat
Found in dense forests in valleys and mountain slopes at elevations of 700-1800 m.
Bark/Stem Description
The thick branchlets are covered with a dense, purple, semi-translucent, long, apically forked and acute hairs.
Leaf Description
The 9-30 cm long by 6-16 cm wide leaves are elliptic, oblong-ovate to broadly ovate. The leaves are grey-green abaxially but upon emergence may be purple; adaxially the leaves are dark green.The thin papery leaves are slightly curved, with 8-11 secondary veins on both sides of the midvein. Leaves have a rounded to shallow cordate base, an irregularly triangualr dentate to denticulate leaf margin and an acuminate apex.
Flower Description
The flowers are held in 10-16 cm wide corymbose cymes. The sterile flowers contain 4 obovate–orbicular to broadly orbicular sepals while the fertile flowers contain a campanulate calyx tube. The petals are purplish to blue-pink and are ovate.
Fruit Description
The fruit capsule is 3-4 mm in diameter with a truncated apex. The ellipsoid seed are brown, slightly compressed and winged at both ends with a striately veined seed coat.
Colour Description
Dark grey-green to light purple(emerging leaves) foliage, purple to purple-pink flowers and brown to purple-brown stems and bark.
Texture Description
Medium to coarse textured plant.
Notable Specimens
The Royal Botanical Garden, Burlington, Ontario, Canada.
Propagation
Softwood cuttings with bottom heat.
Ethnobotanical Uses (Disclaimer)
Used as an ornamental plant.
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