Card game to continue tediously in plant (10)
I believe the answer is:
snapdragon
'plant' is the definition.
(snapdragon is a kind of plant)
'card game to continue tediously' is the wordplay.
'card game' becomes 'snap' (simple card game).
'to continue tediously' becomes 'dragon' (I've seen this in another clue).
'snap'+'dragon'='SNAPDRAGON'
'in' is the link.
(Other definitions for snapdragon that I've seen before include "that's in the garden?" , "Perhaps Christmas entertainment" , "The blossom" , "one found in bed" , "Garden plant" .)