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Test your gardening knowledge with our brainteasers this month!

CLUES ACROSS

6 Purple or - - - - - - beech, Fagus sylvatica ‘Atropurpurea Group’ (6) 7 Bearded or Siberian genus whose name means ‘rainbow’ in Greek (4) 8 Trachelospermum jasminoides or - - - - jasmine for its bloom shape (4) 9 RHS garden located in Surrey (6) 10 Wide family of late perennials such as novi-belgii and novae angliae (5) 12 red-hot - - - - -, cottage garden plant of the kniphofia genus (5) 15 Pointed wooden hand tool for making small planting holes (6) 17 - - - - primrose, common name for streptocarpus houseplant (4) 19 Term broadly used for any plant with medicinal or culinary uses (4) 20 Fiery-plumed Celosia argentea or - - - - - - of Wales’ feathers (6)

CLUES DOWN

1 Alternanthera ficoidea or Joseph’s - - - -, often with many-coloured leaves (4) 2 Common name for various species of euphorbia genus (6) 3 - - - - - imperial, Fritillaria imperialis, is a bulbous plant bearing clusters of bell-shaped flowers (5) 4 name by which the haws or fruit of roses are more familiarly known (4) 5 Bladder campion genus deriving its name from Dionysus’s tutor (6) 11 - - - - - - flower, common name for floaty annual cleome (6) 13 exotic plant family which includes members of the Cattleya type (6) 14 - - - - - hyacinth or Muscari armeniacum, spring bulb with tight blue flower clusters (5) 16 Bowl-shaped nemophila blooms are also known as - - - - blue eyes (4) 18 Shakespeare’s robin Goodfellow – name of a semi-double snowdrop (4)