The improved Meyer lemon is not widely grown commercially, though some commercial growers are expanding the stock. It has taken root on small acreages, and it's grown in nurseries for home gardeners to plant outdoors or indoors. The improved Meyer lemon tree is more tolerant of cold than most lemon species, but needs to be covered at temperatures below 20 Fahrenheit. Reaching 10 feet in height, it's used as an ornamental tree, as well as for fruit, and does well in containers