Prize-winning crossword

When all the answers are in place, the letters in the even-numbered squares 2 to 16 and oddnumbered squares 11 to 31 will spell out the common names of two plants that are opposites in the garden!

ACROSS

1 Clever, humorous remark (9) 6 Wya ___, Wild West marshal (4) 10 ___PG, abbreviated form of Wales’s longest place name! (8) 11 and 2 down US state, capital Providence (5,6) 12 Prefix meaning against (4) 13 New ___, native of 11 across 2 down or 26 down, for example (9) 18 Art of clipping shrubs into shapes (7) 20 Dynasty that ruled Russia until the Revolution (7) 24 Creature that helps to aerate and drain the soil (9) 27 Work with needles and yarn (4) 28 Apply a fertiliser to the soil (5) 30 Prickly plants (8) 3 Garden implement with a tined crossbar (4) 32 Continuing constantly (9)

DOWN

2 See 11 across 3 Game played on a lawn? (6) 4 Hoisting device (5) 5 Small stem bearing flowers or leaves (5) 7 Fuss, agitation (3) 8 Verse (6) 9 Produced without chemical fertilisers (7) 14 Western military alliance (4) 15 ‘Cupid’s ___’, common name of Catananche

caerulea (4) 16 Journey visiting different places (4) 17 Alternative name for cannabis (7) 19 Finished (4) 21 Of a plant, needing protection from severe weather (6) 22 Bladed boots (6) 23 Racing bird, perhaps (6) 25 Frequently (5) 26 US state, capital Augusta (5)