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Black locust trees are fast-growing with an open habit, prominent thorns when young, and deeply furrowed bark when mature. Their fragrant white pea-like flowers attract honey bees, who make an aromatic honey from the pollen.

Latin Name

Robinia pseudoacacia



Also Known As

False Acacia

Type of Plant

Trees Trees

Bloom Season

May - June


Spring Spring


Max height Max Height: 80'
Max spread Max Spread: 35'


  • Shade Tree
  • Street Tree

  • Sunlight Exposure

    Full Sun Full Sun


  • Air Pollution
  • Deer
  • Drought

  • Toxicity

    Do not ingest Do not ingest


    Native Range

    Eastern and central United States


    Black locust has historically been a valuable source of wood for fence posts, due to their rot-resistance. Washington planted a grove of locust on the north end of the mansion.

    Other Details

    Pollinator Pollinator

    Hardiness Zones

    3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b USDA basemap

    Average annual extreme minimum temperature 1976-2005

    map legend 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b

    Bartlett Tree Expert Company has been working with Mount Vernon Estate since 2011 providing expert arboricultural care and GPS mapping for the estate’s historic trees, as well as support from their research facility.   Mount Vernon is proud to partner with Bartlett Tree Experts and appreciates their sponsorship of George Washington’s Mount Vernon Plant Finder App.

    Bring Washington's Garden Home

    Purchase our historic seeds, collected from plants grown at Mount Vernon and plant them in your own garden.

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