Create Your Garden

Robinia pseudoacacia (Black Locust)

Black Locust, Common Robinia, False Acacia, Bastard Acacia, Fragrant White Locust, Locust, Yellow Locust

Robinia pseudoacacia,Common Robinia, False Acacia, Bastard Acacia, Black Locust, Fragrant White Locust, Locust, Yellow Locust, White flowers, Fragrant flowers, Fragrant tree
Robinia pseudoacacia,Common Robinia, False Acacia, Bastard Acacia, Black Locust, Fragrant White Locust, Locust, Yellow Locust, White flowers, Fragrant flowers, Fragrant tree
Robinia pseudoacacia,Common Robinia, False Acacia, Bastard Acacia, Black Locust, Fragrant White Locust, Locust, Yellow Locust, White flowers, Fragrant flowers, Fragrant tree
Robinia pseudoacacia,Common Robinia, False Acacia, Bastard Acacia, Black Locust, Fragrant White Locust, Locust, Yellow Locust, White flowers, Fragrant flowers, Fragrant tree
Robinia pseudoacacia

Fast-growing, Robinia pseudoacacia (Black Locust) is a spreading, suckering, deciduous tree boasting attractive compound leaves and pendulous racemes of scented pea-like flowers. The dark blue-green leaves comprise 5-11 pairs of oval leaflets, which turn yellow in the fall, before shedding to the ground. As the leaves fall, they reveal the beautiful, deeply furrowed, rough bark. Dense, pendant clusters of fragrant white flowers, 8 in. long (20 cm), appear in late spring and early summer. Attractive to honeybees and hummingbirds, they are followed in fall by smooth, flat, purple-brown seed pods. Black Locust provides food and structural habitat for a variety of wildlife species. In its native range, Black Locust provides nesting cavities for birds, including hairy woodpeckers, downy woodpeckers, northern flickers, and red-bellied woodpeckers.

  • Grows as a broadly columnar single-trunk tree, with a narrow oblong crown or in suckering thickets. Can reach 30-50 ft. in height (9-15 m) and 20-35 ft. in spread (6-10 m). This tree spreads by self-seeding and root suckers. Promptly remove suckers unless naturalization is desired.
  • Performs best in full sun in dry to medium, well-drained soils. Tolerates light shade and a wide range of soils, including poor dry soils or clay soils. Good drought tolerance once established.
  • A great tree for difficult areas where other trees will not grow well. However, use this tree with care. It is often considered an invasive species and a garden thug because it spreads very rapidly by root sprouts and by the copious seeds it produces.
  • Generally pest and disease-free. Deer resistant
  • Pruning should be done in late summer or early fall to prevent bleeding; sucker removal if necessary, in fall.
  • Propagate by seed or from root cuttings or from suckers.
  • Robinia pseudoacacia is native to the Southern Appalachians, the Ozarks, and other portions of the Midsouth, but is considered an invasive species in the prairie and savanna regions of the Midwest where it can dominate and shade those open habitats.
  • Discover beautiful U.S. native plant alternatives.
  • This plant has high-severity poison characteristics. If ingested, it may cause death in humans and livestock, and pets.
  • Toxic to dogs, toxic to cats, toxic to horses, toxic to humans.

Requirements

Hardiness 4 - 9
Heat Zones 3 - 9
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Trees
Plant Family Leguminosae
Common names Black Locust, Locust
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Fall
Height 30' - 50'
(9.1m - 15.2m)
Spread 20' - 35'
(6.1m - 10.7m)
Maintenance Average
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, New York, New Hampshire, New Jersey, Vermont, Pennsylvania, Rhode Island, Delaware, Connecticut, Maine, Maryland, Massachusetts, Southwest, Rocky Mountains, Pacific Northwest, Southeast, California, Northeast, Midwest, Wisconsin, Illinois, Ohio, Indiana, North Dakota, South Dakota, Iowa, Kansas, Missouri, Nebraska, Michigan, Minnesota, Washington, Oregon, Idaho, Tennessee, South Carolina, North Carolina, West Virginia, Virginia, Arkansas, Florida, Alabama, Georgia, Louisiana, Mississippi, Kentucky, Texas, Oklahoma, Nevada, New Mexico, Colorado, Montana, Wyoming, Utah
Tolerance Drought, Deer, Dry Soil, Clay Soil
Attracts Bees, Birds, Butterflies, Hummingbirds
Garden Styles Prairie and Meadow
How Many Plants
Do I Need?

Recommended Companion Plants

Acer saccharum (Sugar Maple)
Fagus grandifolia (American Beech)
Nyssa sylvatica (Black Gum)
Liriodendron tulipifera (Tulip Tree)
Cornus florida (Flowering Dogwood)
Viburnum dentatum (Arrowwood Viburnum)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Buy Plants

Requirements

Hardiness 4 - 9
Heat Zones 3 - 9
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Trees
Plant Family Leguminosae
Common names Black Locust, Locust
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Fall
Height 30' - 50'
(9.1m - 15.2m)
Spread 20' - 35'
(6.1m - 10.7m)
Maintenance Average
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, New York, New Hampshire, New Jersey, Vermont, Pennsylvania, Rhode Island, Delaware, Connecticut, Maine, Maryland, Massachusetts, Southwest, Rocky Mountains, Pacific Northwest, Southeast, California, Northeast, Midwest, Wisconsin, Illinois, Ohio, Indiana, North Dakota, South Dakota, Iowa, Kansas, Missouri, Nebraska, Michigan, Minnesota, Washington, Oregon, Idaho, Tennessee, South Carolina, North Carolina, West Virginia, Virginia, Arkansas, Florida, Alabama, Georgia, Louisiana, Mississippi, Kentucky, Texas, Oklahoma, Nevada, New Mexico, Colorado, Montana, Wyoming, Utah
Tolerance Drought, Deer, Dry Soil, Clay Soil
Attracts Bees, Birds, Butterflies, Hummingbirds
Garden Styles Prairie and Meadow
How Many Plants
Do I Need?

Gardening Ideas

Plant Calculator

How many Robinia pseudoacacia (Black Locust) do I need for my garden?

Input your garden space dimensions

Your Shopping List

Plant Quantity
Robinia pseudoacacia (Black Locust) N/A Buy Plants

Please Login to Proceed

You Have Reached The Free Limit, Please Subscribe to Proceed

Subscribe to Gardenia

To create additional collections, you must be a paid member of Gardenia
  • Add as many plants as you wish
  • Create and save up to 25 garden collections
Become a Member

Plant Added Successfully

You have Reached Your Limit

To add more plants, you must be a paid member of our site Become a Member

Update Your Credit
Card Information

Cancel

Create a New Collection

Sign Up to Our Newsletter

    You have been subscribed successfully

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Find your Hardiness Zone

    Find your Heat Zone

    Find your Climate Zone