Asparagus belongs to climbing plants. The middle or end of the root is very swollen and spindles. And the root of Ophiopogon japonicus is coarser, and the middle or the end is expanded to be small oval or spindle shaped root.
The stem of asparagus is smooth and long. Often curved or twisted, up to 1-2 meters long, with mausoleum or narrow wings on the branches. The stem of Ophiopogon japonicus is very short, and there are membranous sheaths on the nodes.
The flowers of asparagus are usually axillary, with light green color. The flowers of Ophiopogon japonicus are solitary or paired in the axils of bracts, with white or lavender petals.
