Eat odd pieces of seed and spew out flowers (5,4)

'flowers' is the definition.
The answer and definition can be both plants as well as being plural nouns.
Perhaps you can see an association between them that I don't see?

'eat odd pieces of seed and spew out' is the wordplay.
'odd pieces of' means one should take alternating letters.
'and' is a charade indicator (letters next to each other).
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
The alternate letters of 'seed' are 'se'.
'eat'+'se'='eatse'
'eatse' after 'spew' is 'speweatse'.
'speweatse' with letters rearranged gives 'SWEET PEAS'.

Can you help me to learn more?