Prize-winning crossword

USEthe following answers to complete thisthi quotation from 20th-century Mexican architect Luis Barragán: ‘A garden must combine the 20 across and the 10 across with 31 across of 8 across and 26 across.’ ACROSS 8 State of being calm and untroubled (8) 9 Musical piece with a recurring theme (5) 10 Difficult to explain, enigmatic (10) 11 Respiratory infection (3) 13 Of a bird, tidy and clean the feathers (5) 15 Plants fringing a tropical beach, perhaps? (4,5) 19 Was 30 across at another’s possessions or achievements? (6) 20 Expressed in verse (6) 21 Serious weed with jointed creeping stems (9) 23 Tree of the birch family (5) 26 ‘ Ode to ___’, Schiller poem(3) 27 Perennial commonly called lady’s mantle (10) 30 Not harmful to the environment (5) 31 Flashdance … What ___ – 1983 hit for Irene Cara (1,7) DOWN 1 Extremely (4) 2 One-hundredth of a metre (10) 3 Seaside a®raction (4) 4 Northern Ireland county, chief town Omagh (6) 5 Thin slice of potato, fried (5) 6 Cu®ing blade (5) 7 Common spelling of boatswain (5) 12 ___ Hall, Cumbrian house famous for 17th-century topiary (6) 14 Able to be turned the other way round (10) 16 Greek god of music and 20 across inspiration (6) 17 Stack of hay or straw (4) 18 Somewhere to sit (4) 22 Sugary fluid secreted by flowers (6) 23 Bugle genus (5) 24 Flood-prevention embankments (5) 25 Of weather, wet (5) 28 Smooth, regular (4) 29 ___ lily, common name of

Narcissus pseudonarcissus (4)