Shrub Agave americana [Century Plant] Can take as few as 10 years to flower in warm climates, to 60 years in colder climates. Once it flowers, it dies and offsets around the base of the original plant eventually form a group of new plants. Suckers produced from the main plant may take only 10-15 years to flower. Beware of thick point tips on its leaves, prune off to protect children. Some susceptibility to Agape weevil, especially when weakened.