Five out of five
The sweet pea Little Red Riding Hood is still going strong. This variety was introduced in 2012 by Keith Hammett in New Zealand and has a striking red standard petal with white wings. After this year's season I think I can say its my all-time favourite modern grandiflora (modern grandifloras are similar to Old Fashioned varieties but with larger flowers, longer stems and more flowers per stem). And, it scores five out of five on the scent scale.