While how well the flu vaccine works can vary(https://www.cdc.gov/flu/about/qa/vaccineeffect.htm), there are a lot of reasons to get a flu vaccine each year. Flu vaccination(https://www.cdc.gov/flu/about/qa/vaccineeffect.htm) can keep you from getting sick with flu.
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.
You can expect the tree to begin setting fruit three to five years after planting. It will reach full production at about 10 years of age, and you can expect it to provide fruit until the age of 15 to 20 years. Each tree will produce up to 3 to 5 bushels per year.