LUANG PRABANG, Laos -- What do you do when your pet elephant enters his period of hormonal frenzy, or musth? One answer might be to pay a quick visit to the Pha Tad Ke Botanical Garden in Luang Prabang, the ancient royal capital of Laos, for some advice. The 10-hectare garden, which opened to the public in November, includes a special plot of medicinal plants for pachyderms, the majestic animal which gave Laos its original name -- Lan Xang -- or Land of a Million Elephants.