In haze kiss sweetheart giving flower (8)
I believe the answer is:
foxglove
'flower' is the definition.
(I've seen this before)
'in haze kiss sweetheart' is the wordplay.
'in' indicates putting letters inside.
'haze' becomes 'fog' (synonyms).
'kiss' becomes 'x' (X can represent a kiss).
'sweetheart' becomes 'love' (both are terms of address to romantic partner).
'fog' placed around 'x' is 'foxg'.
'foxg'+'love'='FOXGLOVE'
'giving' acts as a link.
(Other definitions for foxglove that I've seen before include "that grows wild" , "Source of 1 dn" , "Tall plant with purple or white flowers - vulpine?" , "Plants of the genus Digitalis" , "Animal and hand-covering for a plant" .)