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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.
When the petals of the last flower have dried, the fruit begins to develop. After three to six months from this period, your fruit will begin to ripen. When the fruit is golden halfway up, your pineapple is ready. Surprisingly enough it will be just about the size of a can of pineapple, or a bit larger.