From which age does the lemon tree give sufficient flower and fruits?
From Which Age Does the Lemon Tree Give Sufficient Flower and Fruits?
Certified GKH Gardening Expert
On average, these trees begin bearing fruit around four years of age. For more information on growing lemons, the following articles should help: https://www.gardeningknowhow.com/edible/vegetables/fennel-vegetables/lemon-tree-not-fruiting.htm