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Harvesting Agave for Tequila. I n the past, agave were harvested when the jimadors decided they were ripe enough. This was generally done when the agaves were from eight to ten years old. Jimadors knew, from generations of experience, when the agave was ripest, when it was rich with sugars and ready for harvesting.
Flower stalks are either branching, known as paniculate, or spiky, called spicate. Century plant (Agave americana) is a large plant native to Mexico that produces a treelike 15- to 30-foot-tall flower stalk after 10 or more years of growth.he leaves can be spiny or smooth, with sharp tips. About 200 kinds of agave exist, coming from the southern and western United States south into Mexico, Central America and northern South America. They can take a long time to flower, sending up a flower stalk in one growing season, before they die.