The Ouachita Blackberry is a thornless blackberry cultivar known for its large, sweet berries and vigorous growth habit. Here are some key features of the Ouachita Blackberry:

1. Origin: The Ouachita Blackberry was developed by the University of Arkansas as part of their breeding program. It was released in 2003 and is named after the Ouachita Mountains in Arkansas.

2. Plant Type: Ouachita Blackberries are perennial shrubs belonging to the Rubus genus of the Rosaceae family. They are classified as erect blackberries, meaning their canes grow upright.

3. Fruit: The berries of the Ouachita Blackberry are large and firm, averaging around 8 to 9 grams each. They have a glossy, black-purple color when ripe and are known for their excellent flavor, which is sweet with a hint of tartness. The berries ripen in mid- to late summer, depending on the climate.

4. Thornlessness: One of the notable characteristics of the Ouachita Blackberry is its lack of thorns, which makes harvesting the berries much easier and more comfortable for growers.

5. Vigor: Ouachita Blackberry plants are known for their vigorous growth and high productivity. They produce numerous canes that can reach heights of 4 to 6 feet, requiring adequate support such as trellising or staking to keep the canes upright.

6. Hardiness: Ouachita Blackberries are hardy in USDA zones 6-9, making them suitable for a wide range of climates. They perform best in areas with mild winters and moderate summers.

7. Sunlight and Soil: Like most blackberries, Ouachita Blackberries prefer full sun and well-drained soil. They can tolerate a range of soil types but perform best in loamy, fertile soil with good drainage.

8. Pruning and Maintenance: Proper pruning is essential for maintaining healthy Ouachita Blackberry plants and maximizing fruit production. Canes should be pruned back after fruiting to remove spent growth and encourage new growth for the following season. Regular irrigation and fertilization may also be necessary to support vigorous growth and fruit development.

Overall, the Ouachita Blackberry is a popular choice among home gardeners and commercial growers for its large, sweet berries, thornless canes, and high productivity. With proper care and maintenance, it can be a rewarding addition to any garden or orchard.