Country Farm & Home gets an order from http://www.usefulplants.org/index.php/fruiting-plants/asian-pears/item/blackberry $15 1 gal. , $20 / 2 gal.
County Extension says easy/organic


floricane-fruiting
Primocane-fruiting: UofA “Prime-Ark" series (Prime-Jim, Prime-Jan) see D

cultivar
ripens
Weeks
plant
Fruit
Piedmont
Vendor
Arapaho [1,3,4, 5, D]
early to mid-June[1] (mid June D)
4
Erect, thornless, selfing , partial to full sun (full D), 1-2 y to bear D
4 - 5' tall x 3 - 4' wide.
spacing plants 3 - 4'

8 to 10 quarts of 1- to 2-inch berries, desirable for their extremely tiny seeds [1][3]
Lower yields; plant at higher density [5]
sweet, firm D
YES [2 ,5]
C, D
Navaho [1,3, 5]
late-June-to-August [1]
6 “long"
Erect, thornless, ?, full sun ; Quite susceptible to orange rust [5]
8 to 10 quarts of 1-inch blue-black berries (sweetest - high sugar) [1][3]
YES [2]
C
Cheyenne




YES [2]

Ouachita [5]
June 8 Clarksville, AR
Mid June D

Erect, thornless, selfing D, full sun D, 1-2 y to bear D
4 - 5' tall x 3 - 4' wide.
spacing these plants 3 - 4'
Excellent flavor; high yields[5] medium-sized berries
very sweet, firm D
YES [2, 5]
A, D
Osage [5]
June 10 Clarksville, AR

Erect, thornless, ?, ?
medium-sized berries, good post harvest quality
Probably

Shawnee


thorns,

YES [2] Poorest post harvest ratings [3]
C
Natchez [5]
June 5 Clarksville, AR
Early June D

Erect (semierect D) , thornless, selfing D, full sun D, 1-2 y to bear D
4 - 5' tall x 3 - 4' wide.
spacing plants 3 - 4'

Very large fruit; very high yield; tends to over produce so careful pruning is essential. [5]
sweet firm D
YES [5] NO: cool-summer [1]
D
Apache [1,3,4, 5]
Mid June
5
Erect, thornless, ?, full sun
Best post harvest [3] preferred to Arapaho[4]
“Needs room to spread" YES [5]
A
Triple Crown [1,3,4]
Very late

Semi erect/trailing, thornless
Best post harvest [3] Comparable to Apache [4] Sweet; good yields; local sales only [5]
YES [5]
A
Kiowa [3,5]


thorns,

NO [5]

Chickasaw [3]


, thorns,
Very high first year [3]


Black Butte [3]




NO - lowest yield, poorest post harvest [3]

Chesapeake [3]






qde-1 [3]






Choctaw


, thorns,


C
Von [5]


Erect, thornless

YES [5]

Hull [5]




No [5]

Chester [5]
Very late (July D)

Semi erect, thornless; (full D), 1-2 y to bear D
4 - 5' tall x 3 - 4' wide;
spacing plants 5 - 6'

mild, firm D
Yes[5]
D

References
Vendors
2 "Varieties that do well in the NC piedmont are: ‘Arapaho’, ‘Cheyenne’, ‘Navaho’, ‘Ouachita’, and ‘Shawnee’. These are thornless erect varieties that produce large sweet fruit. Plant reputable blackberry canes in the early spring."






Pruning Erect Thornless Blackberries

Properly pruning erect thornless cultivars such as "Arapaho," "Apache" and "Navaho" encourages them to send out lateral branches. Trim each year's primocanes back to 3 1/2 feet in late summer or early fall. The cut canes become thicker as laterals emerge from their lower sections, so they support the developing crop without help. Cutting the laterals back to 1 foot in late winter or before they start flowering in early spring encourages larger blackberries.