Blue grass has evolved to protect the leaves against damage by strong sunlight and to reduce loss of water by transpiration. Happy in sunshine and poor dry soils, they should never be fed as this often kills them.  Good at front of borders. A grass that is particularly beautiful in leaf, forming as it does thick tufts of blue-green wiry blades.  Evergreen and inclined to lose its silvery blue colour and become more green in the winter months, when there is lack of sunshine.  Winter wet can also cause losses of this grass. Excellent for edging or even in a pot.