Prize-winning crossword

When all the answers are in place, the letters in the odd-numbered squares will spell out the name of a 1904 play, apparently set among prunus trees. The playwright’s name is spelled out by the letters in squares 7, 9, 11, 24, 25, 19 and 20.

ACROSS

8 Botanical name of the belladonna lily (9) 9 Sunken wall between garden and park (2-2) 10 Pungent powder, prepared from chilli peppers (7) 12 Llama-like animal (6) 13 Rodent (3) 14 Ghost, apparition (6) 17 Yellow of an egg (4) 18 Reflected sound (4) 19 Porridge ingredient (4) 20 Suddenly change direction (4) 21 Del Boy’s brother (6) 22 Part of the circumference of a circle (3) 24 Prepared in accordance with Jewish law (6) 26 One who accumulates objects (7) 30 Former Russian emperor (4) 31 ‘Golden ___’, popular apple variety (9)

DOWN

1 Perfumed powder (4) 2 ‘Painted ___’, migratory bu erfly (4) 3 Religious song (4) 4 Tree of the birch family (5) 5 Vehicle with a large rear carrying area (6,3) 6 ‘___ and tongue’, grafting method (4) 7 ‘Hot ___’, award-winning variety of floribunda rose (9) 11 Simon Caney, for example (6) 15 Red Rum, for example (9) 16 Old term for the Top 10? (3,6) 17 Over there (6) 23 Soft white limestone (5) 25 Culinary plant (4) 27 Curved supporting structure (4) 28 Christian ___, French couturier (4) 29 Baby’s biscuit? (4)