In this blue-green motif, stones, corks, and aqua-colored tumbled glass share the mulching duties and mimic the colors of, among others, Hens-and-chicks 'Lavender and Old Lace' (left &quot;cork&quot; pot, bottom left), silver thyme (left &quot;cork&quot; pot, right side and rear copper pot, left side), Phormium 'Jack Spratt'  (left &quot;cork&quot; pot, tall middle), Euphorbia 'Glacier Blue' (right &quot;stones&quot; pot, tall middle), and Ajuga 'Black Scallop' (right &quot;stones&quot; pot, low right).