Suggested by 30 (IKEBANA, or flower arranging), the unclued lights were all anagrams of flowers: 1A gardenia;
18 rose; 22 violet; 24 daisy; 39 lily; 45 iris; 47 orchid; 48 geranium; 8 aster; 12 freesia; 23 lupine; 25D primrose;
28 alyssum.

First prize Romy Angel, Twickenham, Middlesex
Runners-up Ben Stephenson, London SW12; Andrew McKie, Peterborough