Creeping rush (Juncus repens) is a versatile and hardy plant noted for its use in creating carpets in aquariums. It is characterized by needle-like green leaves, medium to fast growth, and durability.
There are many pros associated with this plant: care level and maintenance are easy, tolerance to a wide range of water conditions, different growth forms, etc. On the other side, its appearance and growth rate greatly depends on lighting and nutrition
If you are considering adding Juncus repens to your tank, then you will definitely find this article helpful
This article provides a lot of information including how to care for the plant in a home aquarium and what kind of potential problems you may have with Juncus repens.