Syn.. Lemon Wave & Triclor?

A very distinctive plant with four colours in the leaves, white, yellow, and two shades of green.  The flowers are almost white but with a pale pink or blue tint. 1.25m

Gardens found in 28 pre 2000 surveys DA + DA-R LHS WIN LAG GN TR

Gardens found in the 10 surveyed in 2010: DA LHS ESV NAN AW

UK  Plant Finder 2012 = 16