Does anyone know what this plant is? I took this photo last week at Denver Botanic Gardens in one of their vegetable plots. I love the gunmetal grey color, the fountain-like form, and the weirdly corrugated leaf texture. The plant is about 12”-14” tall at this time, and had no indication of a flower or fruit. Is it some type of kale? I would love to add this as an edible ornamental to my mixed border at home!