Son with present (sweet flower) (8)
I believe the answer is:
snowdrop
'flower' is the definition.
(snowdrop is a kind of flower)
'son with present sweet' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'with' is a charade indicator (letters next to each other).
'present' becomes 'now' (both can mean the current period).
'sweet' becomes 'drop' (I've seen this before).
's'+'now'+'drop'='SNOWDROP'
(Other definitions for snowdrop that I've seen before include "Late winter flower" , "Bulbous plant that flowers in early spring" , "White-flowered plant (Galanthus nivalis)" , "Spring plant with bell-shaped flowers" , "A blooming" .)