The Lisbon lemon tree is one of the most commonly grown lemon in California because it is resistant to environmental conditions like frost, heat, wind and neglect. The tree grows extremely large and is very thorny.
The Meyer lemon has a milder, less acidic flavor due to being a cross between a mandarin or orange and a lemon. It grows well in pots and substitutes well for a real lemon if you live in a colder climate.
The New Zealand Lemonade Lemon is a lemon with minimal acid. It is a variety of lemon which is actually edible like an orange. It can be enjoyed immedately when picked off the tree and won't cause you to pucker when you bite into it. Tastes immediately like lemonade.
The Sweet Lemon is a lemon with very little acid. The flavor is pleasantly mild, floral, and sweet with a very slight tangy flavor. They are everbearing, easy to peel, and seedless. Can be eaten like an orange.
The Varigated Pink Lemon has distinctive green and white striped leaves. The fruit has green and yellow stripes with pink flesh on the inside. Flavor is tart just like a Eureka lemon. Unique, beautiful plant.