There is actually a lot of variety in the agave genus. There are the large, stiff specimens that can grow to 20 feet in diameter. There are also small dish-sized agaves, and agave plants with soft leaves and no spines, although most have leaves that end in a sharp point.
https://www.thespruce.com/agave-tips-for-growing-this-easy-succulent-1402874
The hotter the climate, the more shade they can handle. Mature Size Of Agave Plants. There is a lot of variety in the size of agave plants. They can mature from a few inches tall to 20+ feet in diameter. Agave Bloom Period. Agaves bloom only once, when they are fully mature. That can be anywhere from 5 to 40 years. Agave plants tend to bloom earlier in cultivation than they would in the wild. Most plants die after flowering, however, there are usually small offset plants at the base that can be replanted. Garden Design Tips for Agave Plants. One large agave is all that is needed to make a sculptural focal point.
https://www.thespruce.com/agave-tips-for-growing-this-easy-succulent-1402874
What makes this agave's 80-year life span so unusual is that in nature, American agave plants usually flower after about 10 to 25 years, according to the Matthaei Botanical Gardens. Why the plant flowers when it does is just another of nature's many mysteries.
https://www.washingtonpost.com/news/speaking-of-science/wp/2015/02/23/giant-plant-waits-80-years-to-bloom-immediately-begins-dying/
Mature Size Of Agave Plants. There is a lot of variety in the size of agave plants. They can mature from a few inches tall to 20+ feet in diameter. Agave Bloom Period. Agaves are grown for their dramatic foliage, not their flowers. That's a good thing because they bloom only once when they are fully mature. That can be anywhere from 5 to 40 years. Agave plants tend to bloom earlier in cultivation than they would in the wild. Most plants die after flowering, however, there are usually small offset plants at the base that can be replanted. Garden Design Tips for Agave Plants
https://www.thespruce.com/agave-tips-for-growing-this-easy-succulent-1402874
That is a wonderful photo… what a setting for such a bloom arching over the vast blue water! They are all stunning photos. It is good that the Agave plants live so long before blooming … sad that they give their life giving birth… wow ….really so many offspring? You could start a nursery. Beautiful post!
https://gardeninggonewild.com/uh-oh-my-agaves-blooming/
Tall and blooms in 6 - 8 years with green flowers on a 4 - 6 ft. spike. Agave tequilana azul - Weber's Blue Agave is used to make a tequila, in Jalisco, Mexico, but it is also a very attractive garden plant, reaching upwards of 6 ft. tall and flowering in 6 - 8 years with a 15 ft. spike of yellow blooms.
https://www.thespruce.com/agave-tips-for-growing-this-easy-succulent-1402874
Agave americana, the most common agave in the Southwest, has the common name “century plant” because it supposedly takes a century to bloom. Actually, it’s 15 to 20 years…sooner, if you pamper it with rich soil and ample water.
https://gardeninggonewild.com/uh-oh-my-agaves-blooming/
The growth was so significant that workers had to remove a glass pane in the ceiling so that it could have more room to bloom. 1  This timelapse video from the University of Michigan's Matthaei Botanical Gardens shows its 80-year-old Agave americana growing and blooming from May 5, 2014, to June 9, 2014.
https://www.washingtonpost.com/news/speaking-of-science/wp/2015/02/23/giant-plant-waits-80-years-to-bloom-immediately-begins-dying/
Some of us are just (really) late bloomers. (Mike Householder/AP) American agave plants are known for their fairly fatalistic life cycles: live, die, repeat. After blooming, the plants are expected to die shortly thereafter, usually leaving behind clones of themselves in the form of seeds. But the plant at the University of Michigan's Matthaei Botanical Gardens adds yet another layer of intrigue to the American agave's story line. This particular agave grew to be 28 feet tall and blew past its 25-year life expectancy by waiting a full 80 years to finally bloom. Now, it's finally dying.
https://www.washingtonpost.com/news/speaking-of-science/wp/2015/02/23/giant-plant-waits-80-years-to-bloom-immediately-begins-dying/
Agave desmettiana bloom stalks turn from green to red as they mature. Most of the agaves in this clump decided to bloom at once. This is Agave tequilana—the agave tequila is made from. In Mexico’s commercial agave fields, the plants are harvested at about 7 or 8 years of age, when they are full of sugar in preparation for flowering.
https://gardeninggonewild.com/uh-oh-my-agaves-blooming/
when do agave plants bloom
Agaves bloom when they are fully mature, that can be anywhere from 5 to 40 years. Agaves bloom only once, when they are fully mature. That can be anywhere from 5 to 40 years.