The most distinguishing and attractive feature of rabbit tobacco are its flowers, which form dense inflorescences of pearly white, 1/4-inch-long heads from midsummer until autumn. The flowers form primarily on the top of the plant, where they tower above the slender, 1- to 3-inch-long leaves. Rabbit tobacco plants range in height from 4 to over 30 inches, depending on their growing conditions, but all have a branching, somewhat rangy growth habit that may require staking in a garden setting.
As an annual, rabbit tobacco must be started from seed each year to maintain it in a garden setting. The seeds germinate best in spring, although they can also be started in autumn in mild-winter climates. Full sun exposure is best when growing rabbit tobacco because it promotes a compact growth habit and more vigorous blooming, but it will withstand light shade with little trouble. Moderately dry, fast-draining soil is also required to ensure its health and attractive appearance, although it benefits from occasional watering during hot weather.
The versatility and ruggedness of rabbit tobacco allows it to fill many roles in the garden. Its height and airy appearance lend its use to background plantings in wildflower beds, where its cream-colored flowers will help tone down more brightly colored flowers. Pollinators such as the American painted lady butterfly (Vanessa virginiensis) flock to its subtly sweet, maple syrup-scented flowers, where they feed, breed and pupate during the summer months. The flowers also dry well, making them a desirable addition to late-season gardens and an ideal addition to dried flower arrangements.
Rabbit tobacco was once classified under the scientific name Gnaphalium obfustifolium, which roughly translates to "woolly blunt-leaf." The name refers to the plant's fuzzy flowers and rounded foliage, which are its two most distinctive physical characteristics. Today, it is classified as Psuedognaphalium obfustifolium, which translates to "false woolly blunt-leaf" because it lacks certain unifying features with other members of the genus Gnaphalium. However, old habits die hard, and many nurseries still use the earlier scientific name.