These blackberries may make cultivated blackberry production possible in regions of the state where it is too cold for floricane-bearing varieties to produce a crop.
Prime-Jan: Fruit is medium sized, and flavor may be a bit tart. Use in processed products such as jellies may be the best use of the fruit.
Prime-Jim: Plants are extremely thorny. Similar to Prime-Jan. Pennsylvania trials of both Prime-Jim and Prime-Jan are underway.