‘Lisbon’ lemon actually came first. It is still grown in orchards for lemon juice and other lemon products. The glossy evergreen foliage is a nice bright green. The late winter bloom is nicely fragrant. Mature trees can be kept about twelve feet tall, or allowed to get much taller. Besides the nasty thorns, the only other problem is that all the fruit ripens within a limited season.
‘Eureka’ lemon, Citrus limon ‘Eureka’, is a mutation of ‘Lisbon’ that is more casual about its schedule. It produces a good quantity of fruit in season through the end of winter, and also produces lesser quantities throughout the year. Because it is so productive, the lesser quantities should be more than sufficient whenever lemons are needed.
The ‘Variegated Pink’ lemon is a mutation of ‘Eureka’, so is a mutation of a mutation. The foliage is nicely variegated with white. The green fruit is striped with yellow until it ripens to yellow. The pulp and juice are pink of course. Like many variegated plants, the ‘Variegated Pink’ lemon stays much smaller than ‘Eureka’ lemon, and is more sensitive to frost.