Showy flowers, most have a strong smell (6)
I believe the answer is:
lilies
(Other definitions for lilies that I've seen before include "Luke: ` `Behold the ...... of the field' '" , "Flowering plants" , "Plants with showy pendulous flowers" , "Plants with slender stems and large trumpet-shaped flowers" , "'Showy flowers, most have a strong smell (6)'" .)