Asparagus Plumosus House Plant in a 12cm Pot Asparagus Fern Plant. Gorgeous evergreen plant for indoors Asparagus fern is a fern in name and appearance only. Initially bushy, the stems become more tendril-like as the plant matures, and it is then that you can see that it is actually a twining climber. Arrives in a 12cm pot already established letting you simply enjoy its beauty.