Thought to be a cross between a lemon and a sweet orange, Meyer lemons were brought from China in 1908 by Frank Meyer, a USDA plantsperson. The rich orange-yellow Meyer lemon fruits provide a sweeter alternative to common lemons while bringing color and interest to your winter landscape.
Meyer lemons will bear fruit mostly during fall and winter. Beyond their fruit production, dark green leaves and fragrant flowers make Meyer lemons an ideal ornamental plant. This plant can even be successfully grown in containers or inside as a houseplant, although it is unlikely to fruit when kept inside.
Source: UF|IFAS Gardening Solutions