Not to be confused with snap peas, which are sweet in taste, sweet peas are soothing to sniff. Nowadays, many flowers have lost their heady scent as a result of the breeding process that perfected their physical characteristics, but sweet peas are proud of their perfume. And they're gorgeous too: pinnate flowers on delicate tendrils that blanket trellises, fences, and walls in sugary sights and scents.