The Asparagus setaceous plant (Asparagus aethiopicus syn. Asparagus densiflorus) is generally found during a hanging basket, decorating the deck or patio in summer and helping to wash indoor air in winter. The Asparagus setaceous plant isn’t really a fern in the least , but a member of the Liliaceae family. When growing asparagus ferns outside, place them during a part sun to shady location for best foliage growth. While the Asparagus setaceous plant may sometimes flower, the small white flowers are small and not necessary for the sweetness of growing Asparagus setaceous .