Average Time to Fruit by Propagation Method 1. Seed-Grown Longan Trees⏳ 6–10 years Longan trees grown from seed take the longest to mature because they must pass through a full juvenile phase. Key PointsFruit quality is unpredictableSome trees may never fruitStrong root systems once mature Best UseHome experimentationRootstock for grafting 2. Air-Layered Longan Trees⏳ 2–4…