Propagating asparagus fern involves separating mature plants into smaller sections, each with a crown and roots. These sections are then replanted in well-draining soil and kept moist. The fern can also be propagated through division, where the crown is divided into smaller sections with roots, or by rooting stem cuttings in water or soil. The closeness rating between asparagus fern and these techniques is high, indicating a strong relationship due to the plant’s adaptability to different propagation methods and its ability to thrive in a variety of conditions.