If you know the genus and species of this month’s mystery plant, you could win a free year’s subscription to Fine Gardening. If you’re already a subscriber, we’ll add a year onto your subscription.

Email us your entry by December 31, 2007 with “Mystery Plant #28 – December” in the subject line. Along with your guess, please include your mailing address and your telephone number. The winner will be chosen at random from all correct entries.

Last month’s mystery plant was glory bush, also known as Brazilian spider flower (Tibouchina urvilleana, USDA Hardiness Zones 9-11). This tender shrub grows to 20 feet tall and 10 feet wide in warm climates, and prefers full sun and moist, fertile soil. It is popular as a specimen or mingler in containers in cooler climates and can be brought indoors during the winter months. Fuzzy, silvery green leaves are the perfect backdrop for glory bush’s stunning, royal purple blooms that are up to 2 inches wide. Suzanne Cresie of Baton Rouge, Louisiana was chosen at random from all correct entries to receive a free one-year subscription to Fine Gardening. Congratulations, Suzanne!