Wild blackberry

Leaves of wild blackberry.
Wild blackberry is a medium-sized shrub growing throughout roadsides, open fields and wood edges. Sweet, spicy edible fruits, attractive fall color and a valuable food source for wildlife. "This species is native to the Chicago Region according to Swink and Wilhelm's Plants of the Chicago Region, with updates made according to current research."

Botanical name:

Rubus allegheniensis

All Common Names:

Wild blackberry; Common blackberry; Allegheny blackberry

Family (English):

Rose

Family (Botanic):

Rosaceae

Tree or Plant Type:

  • Shrub

Foliage:

  • Deciduous (seasonally loses leaves)

Native Locale:

  • Chicago area,
  • Illinois,
  • North America

Landscape Uses:

  • Hedge,
  • Massing

Size Range:

  • Medium shrub (5-8 feet),
  • Small shrub (3-5 feet)

Mature Height:

3 to 6 feet high

Mature Width:

6 to 12 feet wide

Light Exposure:

  • Full sun (6 hrs direct light daily),
  • Partial sun/shade (4-6 hrs light daily),
  • Full shade (4 hrs or less of light daily)

Hardiness Zones:

  • Zone 4,
  • Zone 5 (Chicago),
  • Zone 6,
  • Zone 7,
  • Zone 8

Soil Preference:

  • Acid soil

Acid Soils:

  • Prefers

Alkaline Soils:

  • Tolerant

Drought Conditions:

  • Tolerant

Poor Drainage:

  • Moderately Tolerant

Planting Considerations:

  • Commonly planted,
  • Dangerous thorns,
  • Excessive sucker growth,
  • Messy fruit/plant parts

Ornamental Interest:

  • Summer blossoms,
  • Fall color,
  • Edible fruit,
  • Showy fruit,
  • Showy flowers,
  • Attractive bark

Season of Interest:

  • Early spring,
  • Mid spring,
  • Late spring,
  • Early summer,
  • Mid summer,
  • Late summer,
  • Early fall,
  • Mid fall,
  • Late fall

Flower Color & Fragrance:

  • White

Shape or Form:

  • Arching,
  • Multi-stemmed,
  • Open,
  • Upright

Growth Rate:

  • Fast

More Information:

Tree & Plant Care

Sprawling, arching canes that form dense thickets, often reaching 10 feet long.
Canes are usually short-lived and should be pruned back after flowering to control size and encourage new growth.
Best in full sun but tolerant of part shade in moist, well-drained soils.

Disease, pests, and problems

Leaf spots, rust, mildew and cane borer

Native geographic location and habitat

C-Value:  3
Common in fence rows, roadsides, open woods and forest edges.
Native to the Midwest and northeastern U. S.

Attracts birds, pollinators, or wildlife

A popular shrub for birds and other wildlife.

Bark color and texture 

Stout, angled canes have large hooked prickles, dull reddish brown, lacking glaucous bloom.
Cane have a white pith and do not root at the tips, each cane live for 2 years.

Leaf or needle arrangement, size, shape, and texture

Alternate, palmately compound, 3 to 5 inches long and wide with 3 to 7 leaflets.
Dark green leaves are paler beneath, serrated margins, and prickles on petiole.
Fall color is wine-red to burgundy.

Flower arrangement, shape, and size

A profusion of white, 5-petaled, crinkled flowers with showy yellow stamens. Flowers on terminal tips of last years canes.

Fruit, cone, nut, and seed descriptions

Black multiple aggregates, up to 1 inch long drupes.
Juicy fruits ripens in late summer. When picked, the fruit does not separate from its core.

 

Location of Rubus allegheniensis (Wild blackberry) at the Arboretum