Ponca blackberry variety

Rating [ 4.7 ]

Probably, Sweet-Ark Ponca is the sweetest blackberry cultivar in the world today

Botanical designation

Rubus subgenus Rubus Watson 'Ponca'

Originated from a cross of

Originated from a cross of A-2406 x A-2253T

Variety denomination

Variety denomination - 'Ponca', tested as A-2538T

Plants are

Plants are thornless

Bushes have

Bushes have erect canes

Fruit weight is

Fruit weight is 6 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 - 13.4%


Acidity - 0.54%

Cold hardiness is

Cold hardiness is good

Heat tolerance is

Heat tolerance is moderate

Country of origin

Country of origin - United States


Patent US PP33,330 P2 dated August 08, 2021

Current status

Current status - modern or widely used

Meet one of the sweetest blackberry cultivar in the world! It is Ponca blackberry.
Ponca (Sweet-Ark Ponca) offers the top of flavor from one of the world’s leading public blackberry breeding programs. Ponca was selected by John R. Clark, and this cultivar is the twentieth blackberry from the fruit breeding program of the division’s Arkansas Agricultural Experiment Station.
Ponca is floricane-fruiting medium-sized thornless blackberry cultivar. Bushes are moderately vigorous and very prolific. Plants are low in height, about 1,5 m when properly tipping. Primocanes and floricanes are erect in growth habit. Berries and flower clusters are medium-large, cymose, and are mostly borne on the periphery of the plant canopy, providing easy access to harvest.
The canes can be trained to a self-supporting hedgerow although it is beneficial to use a trellis with supporting wires to prevent canes from falling over due to wind or heavy fruit loads.
The bloom period of the Ponca cultivar begins in the last week of April. Flower fertility is high and clusters are well filled. Flowers are big (about 40 mm in diameter), have white color. Berries ripen in the first week of June. The average floricane fruiting period is 55 days. Fruit yield on floricanes averages 5.8 kg per plant.
Average berry weight is about 6 g, slightly larger than Osage and nearly the same as Caddo. The fruit is round, slightly oblong in shape and glossy with a uniform black finish. Size is maintained well throughout the entire harvest season. Ponca cultivar exhibits excellent fruit fertility with full drupelet set.
The fresh fruit rates very well in flavor and is a noteworthy attribute of the cultivar and is comparable to Osage and Caddo. Consistent flavor was noted at repeated observations of fruit of this cultivar over the years of evaluation including after rain events that can reduce flavor and overall fruit quality. The flavor is sweet and sub-acid.
Storage potential of fresh fruit of the new cultivar is good and overall comparable to Osage and Caddo, berries are very firm.
Ponca is disease-resistant. Plants and fruit have shown no evidence of anthracnose and no evidence of susceptibility to orange rust. Plants have shown slight susceptibility to cane and leaf rust.
Winter hardiness has been comparable to Ouachita and has shown very little injury to a low of minus 17 С.
Table 1. Comparison table of popular fresh-market blackberry cultivars and Ponca blackberry (2019 harvest season, Clarksville, Arkansas)
Blackberry Berry weight, g Size, LxW, mm Soluble solids, % Acidity, % Ratio
Caddo 9.15 33x24 8.50 1.33 6.44
Natchez 9.98 35x25 9.33 1.37 6.80
Osage 4.83 23x22 9.80 0.64 15.39
Ouachita 7.74 28x24 9.30 1.61 5.87
Ponca 6.70 26x22 10.40 0.82 12.83
Prime-Ark Traveler 6.97 29x23 9.50 0.67 15.85
Prime-Ark 45 7.64 33x23 9.47 0.81 12.30
A-2491T 9.70 37x23 10.97 0.97 13.49

On the basis of Threlfall et al.’s (2016) findings on ideal composition parameters for fresh-market blackberries and according to market research, made in 2020 by Threlfall and John Clark et al.’s, Ponca have the most ideal composition of the cultivars evaluated, with a 12.83 soluble solids/titratable acidity ratio, 10.40% soluble solids, and 0.82% titratable acidity.

Ponca  sweet?

Is blackberry Ponca sweet?

Ponca blackberries mostly have a sweet flavor
How to cultivate blackberry

How to cultivate blackberry Ponca?

1. Include annual spring nitrogen (N) fertilization (about 56 kg/ha) using ammonium nitrate (NH4NO3);
2. Summer tipping of primocanes at 1.1 m;
3. Use a hedgerow training system including a trellis;
4. A single application of liquid lime sulfur (94 L/ha) each spring at budbreak for control of anthracnose;
5. Use insecticides for spotted-wing drosophila control during the harvest season;
6. Plant spacing at least 0.6 m.
Diseases resistance

What diseases is blackberry Ponca resistant to?

Ponca has very good resistance to diseases such as AnthracnoseOrange Rust
Diseases susceptibility

What diseases is blackberry variety Ponca vulnerable to?

Ponca is quite prone to diseases such as Cane Blight
Relevant documents

Relevant documents for Ponca blackberry variety:

Useful Growing Guides

Useful Growing Guides:

Previous variety
Prime-Ark 45
Next variety

Reviews of the variety Ponca

Review from [MOOK SLOW GARDEN]

การทดลองปลูกแบล็คเบอร์รี่ไร้หนามด้วยต้นเพาะเนื้อเยื่อ (พันธุ์ ponca) และการทำค้างให้ต้น Blackberry
Growing Tissue Culture Ponca Blackberry Thonless


Ponca blackberry tip pruning primocanes for better production 6/16/2022

Review from [TEXASPREPPER2]

I've been dreading this video. Things are not going well with the Ponca Blackberries.

Review from [SUNNY ORCHARD]

Ponca Blackberry 2nd year


Ponca blackberry tip pruning primocanes for better production 6/16/2022

Review from [TEXASPREPPER2]

Here's an update on my Prime Ark Freedom and Ponca blackberries. The cane growth and the huge crop of berries amazing! All these berries are in Wicking Tubs and are doing fantastic.


This is an update of my progress growing the first batch of bare root Ponca blackberry plants. We have flowers budding already.

Discussions about variety Ponca

Dmitrii Z


2021-10-26 14:25

Ponca plants are now available from Ison’s Nursery, Pense Berry Nursery, Simmons and Indianaberry as well.

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