"If colour preference is a window into a gardener's personality, then Frances's choice suggests a desire for serenity. Blue is a peaceful colour, calm and tranquil. With white, it connotes clear skies and white clouds, blue water and white sand. It is the combination that Chinese potters chose for their Ming porcelains and Delft potters for their earthenware. In flower beds, blue is cool on the eyes. Perhaps it is an unspoken secret of The Secret Garden."
Marta McDowell, Unearthing The Secret Garden: The plants & places that inspired Frances Hodgson Burnett