Sedum dasyphyllum 'Opaline'

Somewhere between a blue and a silver, Sedum dasyphyllum 'Opaline' lands in that luminous middle territory — an opalescent, shifting blue-gray that catches the light differently depending on the angle and time of day. It's one of the larger selections in the dasyphyllum group, which means it's still compact and cushion-forming but with a bit more presence and spread than the miniature forms. The soft, hairy leaves pack together tightly, and the white flowers that appear above the cushion in summer are delicate and proportional.

Hardy to Zone 5 and happy in the well-drained, sunny conditions that define a good PNW rock garden, 'Opaline' is both a collector's plant and a genuinely practical groundcover for small spaces. The larger size compared to 'Minor' or other compact dasyphyllum forms means it fills a space more quickly and has a bit more visual weight in a composition — useful if you want a dasyphyllum that holds its own in a mixed planting rather than disappearing between larger companions. Troughs, stone wall crevices, gravel beds, and sunny rock garden pockets all suit it well. The name is apt: there's a softness and subtlety to the color that pays off in person, especially in the diffuse light of a Pacific Northwest overcast morning, when opalescent things tend to glow.