Formal borders, speaking of flowers (6)
I believe the answer is:
floral
'of flowers' is the definition.
(I've seen this before)
'formal borders speaking' is the wordplay.
'borders' suggests taking the first letters (I've seen 'border' mean this).
'speaking' becomes 'loral' (I am not sure about this - if you are sure you should believe this answer much more).
The initial letter of 'formal' is 'f'.
'f'+'loral'='FLORAL'
Can you help me to learn more?
(Other definitions for floral that I've seen before include "of a Roman goddess" , "Like daffodils" , "sort of arrangement" , "with pretty plants?" , "To do with flowers, flowery" .)