How long does it take to produce fruit?
Growing Key Limes
Certified GKH Gardening Expert
According to the Univ. of Florida Extension website (https://edis.ifas.ufl.edu/ch092):
"Key lime trees propagated from cuttings or air-layers may produce some fruit within a year of planting. Budded and grafted trees usually produce fruit within three years, whereas seedling trees require another year or two before fruiting."