Ophiopogon japonicus var nana is commonly called dwarf mondo grass, forms tufts or clumps of dark green, needle-like foliage much more compact than common mondo grass. It grows to a maximum height of 10cm and makes an excellent feature border around paving blocks in pathways. It is a low maintenance drought hardy plant with very few diseases and pests.   Plant 5 to 10 cm apart for a hedged border.  The price is per plant.