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Hawaii™ Rose of Sharon

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Hawaii™ Rose of Sharon (Hibiscus syriacus ‘Minerva’)A tall, stiffly upright shrub with extremely showy blue flowers with a deep red-violet center which appear throughout summer, the flowers are individually beautiful; a very adaptable garden shrub, but does best in full sun

Characteristics

Average Landscape Height:
10 feet
Average Landscape Width:
8 feet
Growth Rate:
medium
Genus:
Hibiscus
Species:
syriacus
Cultivar:
Minsygrbl1
Flower Color:
blue
Flower Period:
from mid summer to early fall
Summer Foliage Color:
green
Minimum Light:
partial shade
Maximum Light:
full sun
Minimum Moisture:
average
Maximum Moisture:
moist
Plant Form:
upright spreading
Canopy:
leggy
Pruning:
late winter pruning
Pollution Tolerance:
high
Other Species Names:
Shrub Althea
Branching:
multi-stemmed
Flower Eye Color:
dark red
Flower Form:
trumpet

Ornamental Features

Hawaii™ Rose of Sharon features bold blue trumpet-shaped flowers with dark red throats along the branches from mid summer to early fall. It has green deciduous foliage. The lobed leaves do not develop any appreciable fall color.

Landscape Attributes

Hawaii™ Rose of Sharon is a multi-stemmed deciduous shrub with an upright spreading habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.

Planting & Growing

Hawaii™ Rose of Sharon will grow to be about 10 feet tall at maturity, with a spread of 8 feet. It tends to be a little leggy, with a typical clearance of 2 feet from the ground, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 40 years or more.

This shrub does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America.

Hawaii™ Rose of Sharon makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Its large size and upright habit of growth lend it for use as a solitary accent, or in a composition surrounded by smaller plants around the base and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

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