The famous corpse flower is renown for having the largest inflorescence in the world. It blooms over a few days and produces a stench like carrion in order to attract its pollinators.
We have found Amorphophallus titanum to be easy growers in our warm greenhouse. We grow it in a mix of equal parts peat, perlite/pumice and orchid bark and use 1/2 strength osmocote plus applied in the soil every 6 months. We make sure it's always above 60 degrees with high humidity. They die down to their corms periodically and will rest for a few months before putting out new stems. Given appropriate conditions, they will produce huge corms weighing over 100 pounds and will bloom in 5-10 years. First photo used with permission from Andrew Stevens. Bloom at the National Botanical Gardens. The second photo is used with permission from Bill Weaver (master A. titanum grower)