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§1 Plant

Robinia pseudoacacia L.

vernacular black locust — species · Fabaceae

USDA
ROPS
GBIF
5352251
Rank
species
black locust (Robinia pseudoacacia)
Platephotograph · Eric KoberleCC BY-NC source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Tree
Duration
Perennial
Group
Dicot
Family
Fabaceae Lindl.
Genus
Robinia
§2a

Native status, by region

  • CAN Canada Introduced
  • L48 Lower 48 States Native
§2b

County-level range

· 1,295 counties across 36 states/territories
Legend Native · 1295 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought
High
Shade
High
Moisture use
Medium
Fire
High
Salinity
Medium
Anaerobic
Low
CaCO₃
High
Hedging
Low
§3b

Climate & soil

Cold tolerance
-37 °F minimum
Frost-free days
140 min.
Precipitation
16–65 in/yr
pH range
4.6–8.2
Root depth
36 in min.
Fertility need
Low
Soil texture
coarse, medium, fine
§3c

Form & growth

Growth form
Multiple Stem
Growth rate
Rapid
Lifespan
Short
Mature height
60 ft
Height @ 20 y
40 ft
Foliage texture
Medium
Foliage colour
Green
Porosity (summer)
Moderate
Porosity (winter)
Porous
Flower colour
White
Fruit colour
Black
Fire resistant
No
N fixation
Medium
Toxicity
None
§3d

Reproduction

Bloom period
Spring
Seed abundance
Medium
Seed begins
Spring
Seed ends
Summer
Spread rate
Moderate
Stratify
No
Seeds / lb
24,000
Propagation
seed, cuttings, bare root, container
§3e

Use & availability

Commercial availability
Routinely Available
Nursery stock
Yes
Browse palatability
Low
Graze palatability
Low
Palatable, human
No
Protein potential
Low
Lumber
Yes
Fuelwood
High
Christmas tree
No

§4Counties, by state

Recorded in 1,295 counties across 36 states/territories.

Alabama view state ↗ 56 N ▾
Arizona view state ↗ 4 N ▾
Arkansas view state ↗ 56 N ▾
Delaware view state ↗ 1 N ▾
District of Columbia view state ↗ 1 N ▾
Florida view state ↗ 11 N ▾
Georgia view state ↗ 26 N ▾
Illinois view state ↗ 88 N ▾
Indiana view state ↗ 50 N ▾
Iowa view state ↗ 10 N ▾
Kansas view state ↗ 66 N ▾
Kentucky view state ↗ 116 N ▾
Louisiana view state ↗ 49 N ▾
Maine view state ↗ 11 N ▾
Massachusetts view state ↗ 14 N ▾
Michigan view state ↗ 38 N ▾
Minnesota view state ↗ 15 N ▾
Mississippi view state ↗ 39 N ▾
Missouri view state ↗ 61 N ▾
Nebraska view state ↗ 15 N ▾
New Hampshire view state ↗ 9 N ▾
New Jersey view state ↗ 18 N ▾
New Mexico view state ↗ 15 N ▾
New York view state ↗ 31 N ▾
North Carolina view state ↗ 39 N ▾
Ohio view state ↗ 88 N ▾
Oklahoma view state ↗ 26 N ▾
Pennsylvania view state ↗ 61 N ▾
Rhode Island view state ↗ 4 N ▾
South Carolina view state ↗ 21 N ▾
South Dakota view state ↗ 3 N ▾
Tennessee view state ↗ 47 N ▾
Vermont view state ↗ 9 N ▾
Virginia view state ↗ 100 N ▾
West Virginia view state ↗ 50 N ▾
Wisconsin view state ↗ 47 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/ROPS ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/5352251 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T09:28:40Z