Robinia pseudoacaciaIndiana NativeIndiana Native
Black Locust

Robinia pseudoacacia - Tree Habit
 Family:
 Genus:
 Plant Type:
 Growth Forms:
 Hardiness:
 Deciduous / Evergreen:
 Flower Notes:
White (Extremely fragrant, creamy-white 1" dia. flowers on 4-8" racemes in May)
 Foliage Notes:
Green (Dark bluish-green 6-14" long leaves with small leaflets, which cast a beautiful mottled shade in summer)
 Stem Notes:
light reddish to greenish brown, slender, zig-zag, smooth
 Fruit Notes:
Black (Flat pod; not ornamentally important)
 Ultimate Height:
30-50 feet
 Ultimate Spread:
20-35 feet
 Bloom Times:
 Fruiting Times:
 Light Requirements:
 Soil Water Requirements:
 Soil Notes:
Especially well adapted to poor, dry, alkaline soils; does not tolerate permanently wet soils
 Range:
East-central to central United States, naturalized more widely
 Maintenance:
 Diagnostic Characteristics:
Leaves alternate and pinnately compound with 7 to 19 1-2" long leaflets. Paired stipular prickles at nodes. Stems are ridged. Old trunks have interlaced ridges resembling ropes.
 Ecological Functions:
  Special Characteristics:
  • Fast Growth Rate 229
  • Notable Bark 168
  • Notable Texture 282
  • Fragrant Flowers 188
  • Highway Plantings 9
  • Mass Plantings 288
  • Naturalizing 114
  • Shade Tree 181
  • Specimen 630
  • Indiana Native 162
  • Tolerant of Poor Site Conditions 187

    • Additional Information

    Widely variable in form, the most picturesque are straight-trunked with branches abruptly fanning out at the top. Fixes N2. Locust borers are troublesome and difficult to control, but many trees live with them successfully for many years. Leaf minors and permanently wet soils can be problems.

    When Robinia pseudoacacia has been observed flowering or fruiting at Purdue University

    Flowering

    JanFebMarAprMayJunJulAugSepOctNovDec

    Fruiting

    JanFebMarAprMayJunJulAugSepOctNovDec

    29 Robinia pseudoacacia found

    Building Map...

    = Heritage plant = Memorial plant
    Number Accession ID Location
    12013_00985*CHORTPARK
    2ORIG_3342*ASPKL
    3ORIG_3344*ASPKL
    Heritage Plant
    42009_13617*AHORTPARK
    52013_00408*AHORTPARK
    62013_00406*AHORTPARK
    72013_00605*AHORTPARK
    8ORIG_3341*ASPKL
    92013_00985*DHORTPARK
    102009_13678*AHORTPARK
    Heritage Plant
    112013_00469*AHORTPARK
    122013_00470*AHORTPARK
    Heritage Plant
    13ORIG_3354*ASPKL
    142009_13679*AHORTPARK
    15ORIG_1321*APSYC
    162009_13735*AHORTPARK
    172013_00409*AHORTPARK
    Heritage Plant
    182013_00407*AHORTPARK
    192013_00356*AHORTPARK
    Heritage Plant
    202013_00604*AHORTPARK
    212013_00985*AHORTPARK
    22ORIG_1323*APSYC
    232013_00468*AHORTPARK
    24ORIG_5176*AROGA
    252013_00985*BHORTPARK
    262020_12728*AHORTPARK
    272020_12728*BHORTPARK
    282020_12728*DHORTPARK
    292020_12728*EHORTPARK

    Other plants like this Robinia pseudoacacia (Black Locust)

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