In select literary passages, “fern” transcends its identity as a plant to evoke a distinctive, natural hue—a cool, enduring green that hints at nature’s quiet persistence. For example, one early text pairs “myrtle and well fern” to depict shades that, although not fiery, remain steadily vibrant throughout the year, suggesting a deep, leafy tint of green ([1]). Similarly, another work employs the simile “airy light as fern” to conjure an image of delicate, almost ethereal green, lending a fresh, organic quality to the scene ([2]). In these usages, “fern” becomes more than flora—it is a subtle metaphor for a calm yet enduring natural color palette.