紫葳科中的“三兄弟”中国凌霄、美国凌霄、南非凌霄,是优良的垂直绿化材料,茎直立,年生长量可达1米,常用于绿化美化墙面、篱垣、护坡、假山、廊架等场所。它们的茎本质藤本状,节和节间长有发达的气根,气根先端吸盘状能紧紧地附着墙体等攀援而上,迅速地布满整个墙面,构成垂直绿化的景观,有效地扩大了绿化面积。 Aster family in the “three brothers” China Peak, the United States Peak, South Africa Peak, is an excellent vertical green material, stems upright, the annual growth of up to 1 meter, commonly used in landscaping walls, fences, slope protection , Rockery, Gallery frame and other places. Their stem nature rattan-like, sections and internodes have developed roots, root apex sucker closely attached to the wall and other climbing and climbing, quickly covered the entire wall to form a vertical green landscape, effective To expand the green area.