Caddo blackberry variety

Rating [ 5 ]

Wonderful thornless blackberry variety with Prime-Ark 45 as one of the parent

Botanical designation

Rubus subgenus Rubus Watson 'Caddo'

Originated from a cross of

Originated from a cross of Prime-Ark 45 x A-2108T

Variety denomination

Variety denomination - 'Caddo', tested as A-2428T

Plants are

Plants are thornless

Bushes have

Bushes have erect canes

Fruit weight is

Fruit weight is 8 g


Berries have a rounded shape

Fruiting habit

Fruiting habit - floricane fruiting (summer-bearing)

Flowering on floricanes starts in the

Flowering on floricanes starts in the first week of May

Ripening date (regular) -

Ripening date (regular) - third week of June

Productivity is

Productivity is 5 kg per plant

Soluble solids

Soluble solids - 10.2%


Acidity - 1.01%

Cold hardiness is

Cold hardiness is good

Heat tolerance is

Heat tolerance is moderate

Country of origin

Country of origin - United States


Patent US PP33,115 P2 dated May 30, 2021

Current status

Current status - modern or widely used

Blackberry Caddo (Sweet-Ark Caddo) is the fourteenth release in a series of erect-growing, high quality, productive floricane-fruiting blackberry cultivars intended for the fresh market developed by the University of Arkansas Division of Agriculture. It has Prime-Ark 45 in pedigree. Caddo was developed with the intention of advancing flavor to a higher level in an additional thornless blackberry cultivar. Canes of Caddo variety are fully thornless and erect, looks like Natchez. Caddo ripens mid-early season, near Osage and slightly before Ouachita and just after Natchez. Blackberry Caddo produces large berries, larger than that of Osage and Ouachita. Caddo has a flavor very similar to Osage and Natchez, but more sweety. Fruits of blackberry Caddo are oblong and have even drupelet fill. Drupelets are usually visually larger than Ouachita, Osage and Natchez. Berries of Caddo are glossy with a uniform black finish. Fruit firmness is a noteworthy characteristic of Caddo. Average berry weight of Caddo ranged from 7 to 9 g. Yield is excellent, like Natchez. Winter hardiness is about -17 C. Overall, Caddo cultivar appears similar in hardiness to other Arkansas-developed cultivars such as Ouachita and Osage varieties. Caddo should be a commercial cultivar with good potential for shipping, as well as an option for local-market production as well as home gardens.
Table 1. Comparison table of Caddo, Ouachita, Osage and Natchez blackberry cultivars at the University of Arkansas Fruit Research Station, Clarksville, from a 2013-planted replicated trial and single-plot observational trial
Main features Variety
Caddo Osage Ouachita Natchez
Flowering date
10% bloom April 28 April 24 April 26 April 20
50% bloom May 3 April 30 May 2 April 25
Harvest date
First June 10 June 13 June 15 June 8
Peak June 23 June 22 July 3 June 18
Last July 14 July 20 July 20 July 7
Fruit weight, g/berry
First 8.4 5.9 7.1 10.0
Peak 7.9 6.2 6.3 11.5
Last 7.6 5.9 6.7 8.9

Caddo  sweet?

Is blackberry Caddo sweet?

Caddo blackberries have a balanced sour-sweet flavor
How to cultivate blackberry

How to cultivate blackberry Caddo?

1. Include annual preemergence and postemergence herbicide applications;
2. Include annual spring nitrogen (N) 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.
Diseases resistance

What diseases is blackberry Caddo resistant to?

Caddo has very good resistance to diseases such as AnthracnoseSeptoria Leaf and Cane SpotOrange Rust
Diseases susceptibility

What diseases is blackberry variety Caddo vulnerable to?

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

Useful Growing Guides:

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Reviews of the variety Caddo


Extremely proud of this year’s blackberry harvest. Variety pictured is ‘Caddo’. Flavor/texture are (of course) lightyears away from store-bought. First full season (planted fall 2020 along with ‘Columbia Giant’ that is still getting established but gave some good smaller fruit).

— City Mouse Garden (@CityMouseGarden) August 30, 2021


Hello. I want to introduce you to Caddo, the 14th release in the University of Arkansas System Division of Agriculture Blackberry Breeding Program.
Caddo combines a number of really great traits, including large fruit size, really great flavor with nice aromatics, a reduced acidity, high soluble solids, a combination of traits that really make the flavor nice. Caddo is one that we feel like will provide high yields for fresh market production for Arkansas growers, growers around the United States and around the world. It has erect thorn less plants, really easy to manage. Caddo is one that's very exciting, I want to tell you more about it.
One thing about Caddo I want to point out is the health of the plants. The floricane leaves remain green even after harvest of the crop. This is really positive because that helps contribute to the sweet berry flavor through the season, plus it helps restore the plant's vigor and carbohydrate storage for the primocanes which will bear next year's crop. Caddo stores really well. It does quite well in storage for 7 days, up to 14 days in dry conditions, and the flavor is maintained really well during storage also. This allows opportunities for shipping of berries, but also for the local sales where you might want to store fruit for a few days before selling.
Caddo ripens on average about June the 8th in West Central Arkansas, a couple of days after Natchez, very near Osage, and about five days before Ouachita. So it placed well in a good sequence of ripening among the Arkansas varieties. Caddo has large berry size, 8 to 10 grams on average, and the fruit size is maintained for the entire fruit season, something that's unusual for many blackberry varieties. The berries are elongated, shiny, and very attractive in the clamshell.
Caddo is an exciting new variety, and it expands options for Arkansas growers and for growers around the country and around the world for a thorn less, erect, full-flavor blackberry.

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