南京中山植物园于1986年从美国引入一批黑莓品种赫尔（Hull）种子，培育出实生苗350株，其中无刺苗232株。经过8年实生选优，从中选出钟山17－13优株，并通过组培无性繁殖。其果实大，平均果重5．98g，最大9．7g，不仅远高于其他实生单株，也高于原品种赫尔。萌枝粗壮，具有较好的栽培性状，值得扩繁种植。

Seeds of "Hull" blackberry were introduced from the United States by Nanjing Botanical Garden in 1986, from which 350 seedlings have been raised. Among those 232 are thornless. With 8-year selection, ZS17-13 was considered as the most outstanding plant and was micrepropagated for spreading. The aggregate fruit of ZS17-13 is large, with an average weight 5.98 g and maximum 9.70 g, not only much larger than that of the other seedlings, but also surpass the original (maternal) cultivar. ZS17-13 is deserved to be extended for it's strong suckers and excellent characters.