Even better, they're pretty easy to grow (and that's even if you're planning on sowing your seeds in the bleak midwinter). If ...

And though they are grown as annuals, the plants are actually tender, short-lived perennials. Over a decade ago I began to notice snapdragon plants surviving the winter to grow and bloom again.

Dudareva has been studying floral scents in snapdragon, which she selected because it is one of the few modern plants that have a strong floral scent. "Most scientific work has been done on a ...