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.
If you want to add a pecan tree to your landscape, start with a container-grown or bare-root nursery tree, or grow your tree from seed. Although pecans planted from seed grow slowly during their first two to three years, they can easily reach heights of 70 feet or more at maturity, around 20 years of age. For best results, you'll need to graft your seed-grown tree at the proper time, in addition to planting a second variety for cross-pollination.