Originally from Mexico. Now cultivated worldwide. It has a spreading rosette of gray-green leaves, each with a spiny margin and a heavy spike of big yellow flowers. During flowering, a tall stem or “mast” grows from the center of the leaf rosette and bears a large number of shortly tubular flowers. The plant dies after flowering, but produces suckers which continue its growth. The average life-span is around 25 years.
It is a common misconception that agaves are cacti. They are not related to cacti.
Botanical name: Agave americana Family: Agavaceae (agave family)
Info – Wiki and Flowersofindia.com . Picture taken at Marredpally, Secunderabad.