Serena Williams hits 157 consecutive weeks at No.1 this week, passing Martina Navratilova for the second-longest streak at No.1 in WTA history.
Answers.comÂ® is making the world better one answer at a time. A pecan tree can start producing pecans anywhere from 4 to 10 years if they are grafted. Ungrafted trees can take 10 to 15 years before producing pecans.
Harvest and Storage. If you started your pecan trees from seedlings, you can look forward to your first light nut harvests about 15 years later. Grafted trees are usually made with older pecan stock, so you will start to see nut production after just 3 or 4 years. Harvest time for pecans is early autumn.