Variegated Greater Periwinkle.  

Vinca major Variegata / Elegantissima is a prostrate, evergreen shrub with ovate, dark green leaves margined creamy white. Produces violet blue flowers from mid-spring to autumn. Grows in most soils, good in sun or dry shade. Hardy. Excellent for ground cover and supressing weeds on banks or under trees. Only suitable for large gardens. 

Eventual height up to 45cm with an indefinite 

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