A plum pudding encrusted snake in the grass (8)

'the grass' is the definition.
(paspalum is a kind of grass)

'a plum pudding encrusted snake in' is the wordplay.
'pudding' indicates an anagram (a mixture or pudding of the letters).
'encrusted snake' becomes 'asp' (asp is a kind of snake. I am not sure about the 'encrusted' bit.).
'in' means one lot of letters goes inside another.
'a'+'plum'='aplum'
'aplum' anagrammed gives 'palum'.
'palum' enclosing 'asp' is 'PASPALUM'.

Can you help me to learn more?