Prize-winning crossword

When all the answers are in place, the letters in the even-numbered squares from 2 to 36 will spell out a camellia hybrid named after its breeder, and a variety, which is also the Cornish castle where its breeder lived.

ACROSS

3 Devilishly bad? (10) 9 Animal’s den (4) 10 Most suitable (5) 12 Part of circle’s circumference (3) 13 Had an aroma (7) 16 Large hessian bag (4) 18 Object of worship (4) 20 Hebridean island famous for whisky (5) 22 Get in touch with (7) 23 Soft toffee made by heating...(7) 25 …this substance (5) 26 Sharpened side of a blade (4) 28 Ready for harvesting (4) 31 Extends over an increasing area (7) 34 Tree of the Taxus genus (3) 35 Long-eared horses, or fools? (5) 37 Small burrowing mammal (4) 38 Latin term meaning ‘solid land’ (5,5)

DOWN

1 Drink flavoured with hops (4) 2 …and a drink made from grapes (4) 4 Members of the Hedera genus (5) 5 Flying pollinator (3) 6 Showy, bulbous plant (4) 7 Variety of beet with edible white leaf stalks (5) 8 Nearby pub? (5) 11 June 6, 1944 (1-3) 14 Condiment made from the crushed seeds of brassicas (7) 15 Accidental escape of liquid (7) 17 ___ garden, one with an intricate design (4) 18 Go where one is not welcome (7) 19 Plantation of fruit trees (7) 21 Low dam across a river (4) 24 Church recess (4) 26 Country of NE Africa (5) 27 Peninsula of South Wales (5) 29 Derby racecourse (5) 30 Sunken wall between garden and park (2-2) 32 Stratford’s river… (4) 33 …and the second-longest