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  The American Gardener
 
 


January/February 1999 issue

 

Arum-atic
by Mark C. Mollan
Whether it inspired the Broadway play and subsequent movie Little Shop of Horrors is unknown, but the fabled titan arum (Amorphophallus titanum) surely could have landed the man-eating lead role. The blooming of the six-foot-three-inch-tall inflorescence with the scent of rotting meat tripled attendance records at the Atlanta Botanical Garden (ABG) for the first 10 days in July 1998. It was the first titan arum to bloom in Georgia and only the seventh to flower in the United States since the plant was introduced from Indonesia in 1937. “It is a wonder what nature can do. The plant’s just a fascinating darn thing!” exclaimed ABG visitor Carl Beck as he gazed at the plant amid children holding their noses.

A rare native of the rain forests of Sumatra, an island in western Indonesia, the titan arum grows from a tuber that typically sprouts and sheds one massive leaf each year until it reaches a threshold weight of between 20 and 40 pounds. Once the ABG specimen reached that threshold on June 12, a flower shoot emerged from the tuber and grew at a rate of about four inches a day until it reached its fully erect flowering position on Independence Day. The flower - which lasts only a few days - collapsed on July 8th.

Although it is often described as the largest flower in the world, A. titanum actually produces an inflorescence, or compound flower. The flower emits a pungent odor of decaying flesh to attract the carrion-eating insects that pollinate it in its native habitat. ABG staff attempted to artifically pollinate the arum using pollen obtained from a titan arum that bloomed in June at Fairchild Tropical Garden in Miami. According to Ron Gagliardo, curator of tropicals at ABG’s Dorothy Chapman Fuqua Conservatory, “If the pollination is successful, it will be the first time in history a cultivated Amorphophallus titanum will have produced seed.” In addition, pollen collected from the ABG plant was put in cold storage in readiness to be shipped around the world for the next inflorescence that blooms.

More of these otherworldly blooms are expected at ABG in late spring or early summer 1999 as other A. titanum tubers reach the threshold that begins the flowering cycle. For additional information, visit the ABG web site at www.atlantabotanicalgarden.org or call the Atlanta Botanical Garden at (404) 876-5859.

 

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