Your guide to the plants used to make the green roof on Vancouver Convention Centre: Agrostis pallens (bent grass). Anaphalis margaritacea (pearly everlasting). Allium acuminatum (Hooker’s onion ...

Yellow-flowered garlic (Allium flavum) is a diminutive but showy addition to rock or gravel gardens and along the edge of beds and borders.Lax umbels of golden-yellow flowers appear in early July ...