Citrus Eureka lemons trees are commonly grown as a citrus tree in home gardens. They are known for their hardy nature and for high fruit production. Eureka lemon trees are easy to grow and they will adapt to a wide range of climate and soil conditions. Generally speaking "Eureka" lemon trees grow to around 5m tall, which makes it one of the larger lemon trees. One advantage of growing a Eureka lemon tree is that they grow quite quickly.