5 Blackberry Plants for 45.00. Harvest berries with ease from thornless, upright canes. Primocanes fruit first, followed by a second crop on older canes. Fruit is large, firm, and sweet. Excellent choice for home gardening or farmer’s markets. Disease-resistant to rust. Everbearing primocane. Early season. Drought tolerant. Cold-hardy. First-year canes begin ripening in July, while second-year canes bear heaviest crops in June. Both continue to fruit until frost. Self-pollinating Thorn-less ever-bearing blackberry. Prime-Ark offers exceptional fruit size and flavor combined and tolerance of heat and humidity. Fruits early season from primo-canes and another crop later in the season on older canes. It has very large fruit, larger than Natchez, with excellent flavor.