Ouachita blackberry variety

Rating [ 4.5 ]

High fruit quality, consistent high yields, good fruit size and excellent postharvest fruit-handling potential

Botanical designation

Rubus subgenus Rubus Watson 'Ouachita'

Originated from a cross of

Originated from a cross of Navaho x A-1506

Variety denomination

Variety denomination - 'Ouachita', tested as A-1905

Plants are

Plants are thornless

Bushes have

Bushes have erect canes

Fruit weight is

Fruit weight is 6 g

Shape

Berries have a rounded shape

Fruiting habit

Fruiting habit - floricane fruiting (summer-bearing)

Begins to bloom in the

Begins to bloom in the second week of May

Harvest season starts in the

Harvest season starts in the third week of June

Productivity is

Productivity is 3 kg per plant

Soluble solids

Soluble solids - 9.9%

Acidity

Acidity - 0.97%

Cold hardiness is

Cold hardiness is moderate

Heat tolerance is

Heat tolerance is moderate

Country of origin

Country of origin - United States

Patent

Patent US PP17,162 P3 dated October 21, 2006

Current status

Current status - cultivated (actual)


Ouachita is the eleventh release in a series of erect-growing productive floricane-fruiting thornless blackberry varieties bred by the University of Arkansas. Ouachita has Navaho cultivar in pedigree. Plant was selected in 1993.
Blackberry variety Ouachita produces yield comparable to or higher than Apache or Navaho cultivars. Average berry weight is about 6 g. Average yield is about 3 kg from each healthy plant. Fruit of Ouachita are blocky and conical and very attractive with an exceptional glossy, black finish. Fruit firmness is slightly less than that of Navaho. Flavor is very good. Ouachita begin bloom the same date or nearly as Navaho and Apache blackberry - at the end of April of beginning of May. First harvest date is the middle of June. Harvest season continues up to the end of July. Canes of blackberry variety Ouachita are fully thornless and very erect. Vigor rating is higher than Navaho blackberry.
Health rating of Ouachita variety is excellent, this variety has good resistance to winter frost, pests and diseases. Fresh is main use but can be processed for jellies, jams, juice, wine.
Table 1. Yield and average berry weight at two locations in Arkansas (plots were established in 1999)
Cultivar Yield, kg/ha Fruit weight, g
2001 2002 2001 2002
Clarksville
Ouachita 6811 6659 6.4 4.7
Apache 7908 12045 8.8 7.9
Arapaho 3527 3171 5.3 4.2
Hope
Ouachita 11184 10931 5.5 5.0
Apache 5336 6178 8.9 7.0
Arapaho 7365 9516 4.6 4.0
Table 2. Yield and average berry weight at three locations in Arkansas (plots were established in 1996)
Cultivar Yield, kg/ha Fruit weight, g
2001 2002 2001 2002
Clarksville
Ouachita 10086 9568 6.7 5.8
Apache 7683 9560 9.5 7.7
Arapaho 4974 4981 5.2 5.0
Navaho 4764 10060 4.6 4.6
Hope
Ouachita 16994 9866 6.0 5.1
Apache 14533 5588 8.4 6.7
Arapaho 9703 5134 5.0 4.2
Navaho 11115 3071 4.9 3.6
Fayetteville
Ouachita 8588 - 4.5 -
Apache 8349 - 7.4 -
Arapaho 4996 - 3.5 -
Navaho 4785 - 3.1  
Table 3. Сomparison table of Navaho, Arapaho, Apache and Ouachita blackberries at the University of Arkansas Fruit Substation, Clarksville
Main features Variety
Apache Arapaho Ouachita Navaho
Flowering date (1997 - 1998 years)
10% bloom April 29 April 28 April 29 May 1
50% bloom May 5 May 4 May 7 May 7
Flowering date (2000 - 2002 years)
10% bloom April 26 April 25 April 26 -
50% bloom April 30 May 2 May 2 -
Harvest date (1997 - 1998 years)
First June 21 June 6 June 12 June 19
Peak June 30 June 11 June 19 July 1
Last july 26 July 7 July 20 July 27
Harvest date (2000 - 2002 years)
First June 19 June 5 June 13 -
Peak June 29 June 16 June 24 -
Last July 25 July 2 July 16 -
Fruit (rating scale of 1 to 10 where 10 is the best)
Firmness 8.0 8.1 8.1 8.6
Flavor 8.3 7.8 8.4 8.5
Fresh seed, mg 12.5 8.4 11.4 10.6
Dry seed, mg 4.8 3.3 4.5 4.2
Soluble solids, % 11.1 8.2 9.9 11.9
Plant (rating scale of 1 to 10 where 10 is the best)
Vigor 9.1 7.3 8.4 7.4
Health 9.4 7.8 8.5 8.9

How to cultivate blackberry

How to cultivate blackberry Ouachita?

Growing recommendations are typical of other Arkansas upright cultivars:
1. Include annual preemergence and postemergence herbicide applications;
2. Include annual spring nitrogen fertilization (about 56 kg/ha) using ammonium nitrate NH4NO3;
3. Summer tipping of primocanes at 1.1 m;
4. Sprinkler irrigation apply as needed;
5. Use dormant pruning;
6. A single application of liquid lime sulfur (94 L/ha) each spring at budbreak for control of anthracnose;
7. A single application of liquid ferrous sulphate each fall after the plants have gone into chill period;
8. Plant spacing at least 0.6 m.
Diseases resistance

What diseases is blackberry Ouachita resistant to?

Ouachita has very good resistance to diseases such as AnthracnoseRosette or Double-Blossom
Diseases susceptibility

What diseases is blackberry variety Ouachita vulnerable to?

No susceptibility to spicific pests or diseases has been observed for Ouachita
Useful Growing Guides

Useful Growing Guides:

Osage
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Reviews of the variety Ouachita

Review from [WILLIAM SMITH]

Great tasting and easy to growI have had mine for 2 seasons so far and look forward to this years bearies

Review from [KEITH]

This is the first year I planted blackberries. I planted 3 varieties and so far this one has grown the most (several shoots with the main one more than 5 ft tall). It didn't flower this year, but I'm hoping it will next year. Berry production and taste will determine if this stays a 4 or becomes a 5 star berry.

Review from [RICHARD]

I LIVE IN ZONE 4 IN WASHBURN, WI.THESE BERRYS ARE LISTED FOR ZONE 5-9. PLANTED THEM 2 YRS AGO AND DIDN'T THINK THEY WERE DOING WELL SO TILLED THEM UNDER.WELL LAST YEAR THEY TOOK OFF LIKE CRAZY WITH MANY MORE PLANTS THEN I ORIGINALLY PLANTED. I NOW HAVE 4 TO 5 FOOT PLANTS WITH MANY BLOSSOMS AND AM EXCITED TO SEE MY FIRST CROP!! I RATED THEM A 4 AND MAY GO TO A 5 IF THEY CONTINUE LIKE THEY HAVE AND SURVIVE THIS WINTER WELL.

Review from [THORNLESS BLACKBERRIES]

Here are a few Ouachita thornless blackberry plants that I planted in late March 2020. They are currently dormant and should look a lot better this coming spring / summer. These were planted from root cuttings.
 

Review from [DIY HOME AND GARDENING]

How To Grow Blackberry ‘Ouachita’ July Cropping, Growing Blackberry ‘Ouachita’, Vegetable Gardening, U.K.
 

Review from [CHRIS ECKERT]

Harvest of blackberry on shift trellis at Eckert orchards

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