高杆女贞为常绿乔木类，树冠卵形，树皮为灰绿色，平滑不开裂，枝条开展，光滑无毛；单叶对生，卵形或卵状披针形，先端渐尖，基部楔形或近圆形，全缘，表面深绿色，有光泽，无毛，叶背浅绿色革质，6-7月开花，花白色，花冠裂片与花冠筒近等长，圆锥花序顶生，浆果状核果近肾形，10-11月果熟，熟时深蓝色，有白粉。其枝叶清秀，终年常绿，夏日满树白花，又适应城市气候环境，是长江流域常见的绿化树种；常栽于庭园观赏，广泛栽植于街坊、宅院，或作园路树，或修剪作绿篱用。吸收有害气体的能力也强，并能吸收铅蒸气，对二氧化硫、氯气有较强的抗性可作为工矿区的抗污染树种。

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