Plant Profile

Robinia pseudoacacia (Umbrella Black Locust)

Black locust is a fast growing but weak wooded tree growing almost in every location. Leaves are deciduous, compound. Early summer long cluster of fragrant flower appears which is edible.Ths flower is one of the largest pollen source for honey bees. Black locust can grow on any site, can tolerate drought, frost heat. In some areas it has invasive potential. Many varieties are available in the market for landscape use such as " Umbellata" which has umbrella shape.

Landscape Information
Botanical Description
Horticulture Management

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By Fontema (Own work) [Public domain], via Wikimedia Commons

By Doronenko (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons

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French Name: Robinier

Pronunciation: roe-BIN-nee-uh soo-doe-uh-KAY-shuh
Plant type: Tree
Origin: North America
Heat Zones: 1 to 9

Hardiness Zones: 4 to 8
Uses: Specimen, Shade, Street
Size/Shape

Growth Rate: Fast

Tree Shape: Round, Weeping

Canopy Symmetry: Symmetrical

Canopy Density: Dense

Canopy Texture: Fine

Height at Maturity: 5 to 8 m

Spread at Maturity: 5 to 8 meters

By Doronenko (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons
By Rasbak (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
By No machine-readable author provided. Bogdan assumed (based on copyright claims). [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
By Brosen (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons
By Jean-Pol GRANDMONT (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons
By Fontema (Own work) [Public domain], via Wikimedia Commons

By Doronenko (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons

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Foliage

Leaf Arrangement : Alternate

Leaf Venation: Pinnate

Leaf Persistance: Deciduous

Leaf Type: Odd Pinnately compund

Leaf Blade: 20 - 30

Leaf Shape: Obovate

Leaf Margins: Entire

Leaf Texture: Fine

Leaf Scent: No Fragance

Color(growing season): Green

Color(changing season): Green, Yellow
Flower

Flower Showiness: No

Flower Size Range: 1.5 - 3

Flower Type: Solitary

Flower Scent: No Fragance

Seasons: Spring
Trunk

Trunk has Crownshaft: No

Trunk Susceptibility to Breakage: Suspected to breakage

Number of Trunks: Single Trunk

Trunk esthetic Values: Fissured
Fruit

Fruit Type: Legume

Fruit Showiness: No

Fruit Size Range: 7 - 10

Fruit Color: Red, Black

Seasons: Spring

By Doronenko (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons
By Rasbak (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
By No machine-readable author provided. Bogdan assumed (based on copyright claims). [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
By Brosen (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons
By Jean-Pol GRANDMONT (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons
By Fontema (Own work) [Public domain], via Wikimedia Commons

By Doronenko (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons

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Tolerance

Frost Tolerant: No

Heat Tolerance: No

Drought Tolerance: Yes

Salt Tolerance: Good
Requirements

Soil Requirements: Clay, Loam, Sand

Soil Ph Requirements: Acidic, Neutral, Alkaline

Water Requirements: Moderate

Light Requirements: Full, Part
Management

Toxicity: No

Invasive Potential: Yes

Susceptibility to Pests and Diseases: Yes

Pruning Requirements: Needed, to develop a strong structure

Fruit/ Leaves/ Flowers litter: No

Surface Rooting: Yes

Life Span: 25-50 years

Diseases: Powdery Mildew, Leaf Spots, Canker

Edible Parts: Flower

Pests: Scales, Leaf Miner, Borers

Plant Propagation: Seed, Cutting