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Purple Robe Locust

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Purple Robe Locust (Robinia pseudoacacia ‘Purple Robe’)A round-headed shade tree with highly fragrant and very attractive chains of deep pink flowers in spring; extremely adaptable, performs well in poor soils; more compact than the species, ideal as an accent tree for home landscapes

Characteristics

Average Landscape Height:
40 feet
Average Landscape Width:
30 feet
Growth Rate:
fast
Genus:
Robinia
Species:
pseudoacacia
Cultivar:
Purple Robe
Flower Color:
rose
Flower Period:
in late spring
Summer Foliage Color:
sea green
Fall Color:
yellow
Minimum Light:
partial shade
Maximum Light:
full sun
Minimum Moisture:
dry
Maximum Moisture:
moist
Plant Form:
round
Canopy:
low
Pruning:
late winter pruning
Pollution Tolerance:
high
Other Species Names:
Common Locust
Branching:
decurrent
Flower Eye Color:
yellow
Flower Form:
pea
Flower Fragrance:
high

Ornamental Features

Purple Robe Locust has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. It has bluish-green deciduous foliage which emerges burgundy in spring. The oval pinnately compound leaves turn yellow in fall.

Landscape Attributes

Purple Robe Locust is a deciduous tree with a more or less rounded form. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.

Planting & Growing

Purple Robe Locust will grow to be about 40 feet tall at maturity, with a spread of 30 feet. It has a low canopy with a typical clearance of 5 feet from the ground, and should not be planted underneath power lines. It grows at a fast rate, and under ideal conditions can be expected to live for 60 years or more.

This tree does best in full sun to partial shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for xeriscaping or the moisture-conserving landscape. It is not particular as to soil type or pH, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selection of a native North American species.

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