Part sun/part shade. A mounding and sprawling evergreen perennial with needle-like leaves. Tiny white blooms are followed by small red berries. Not a true fern, it is actually a member of the lily family; “foxtail” fern is in fact the same species, just a different form.
Use asparagus fern for a hardy perennial to fill in around more strongly formed plants or planters. It spills out around other plants like sea foam, for a nice effect.