'Hairline Fracture' is a medium-large sized sport of 'Krossa Regal'. Anticipate registration 2003. Same habit as parent - upright, vase shaped plant with grey-blue leaves. Edges of leaves have a narrow 1/16' creamy white margin that occasionally streak towards the midrib, looking like hairline fractures, duh. Very good growth habit - mine takes quite a bit of sun without losing the blue too early.