Casuarina glauca
Great for rockeries or spilling down embankments and over the side of pots, and will flow over rocks and hillocks creating spectacular effects. A very easy care plant that does well in a wide range of soil types, and from cold temperate to subtropical areas. The dense foliage will deter weed growth, adding to the low maintenance aspect. Can take some salt, so is good for coastal gardens. Tolerant of dry spells once established, frost tolerant. Heavy frost may brown the top foliage, but new growth will shoot away in spring.