'Boxwood' Basil

I've been thinking a lot about basil this spring and wishing I had land to grow a lot of basil. In particular, I really want to grow a knot garden of 'Boxwood' basil and inside the geometric shapes plant dark basil varieties like 'Purple Ruffles' and 'Dark Opal.' I didn't grow the 'Boxwood' basil picture below, it was photographed at the gardens of Ball Horticulture, but all winter I've been revisiting the picture in my computer.