Asparagus Fern is readily reproduced by dividing the roots. Carefully divide the root ball into portions and plant each in new soil. This should be done best during spring when repotting is being done. Use pruning to stimulate new growth and remove shape to old stems which are yellow or dead. Repotting It is needed every 1-2 years since the plant grows rapidly. The correct maintenance will not only maintain the plant clean, but also increase its foliage to be full and healthy with time.