Lemon Meyer - 15LMeyer lemon trees are a hybrid citrus tree that is a cross between a lemon and a mandarin orange. Meyer lemon trees are smaller and rounder than regular lemons, with smoother, thinner skin and a sweeter, less acidic flavor. They are also more cold sensitive than regular lemons, so they are best grown in warm climates. Meyer lemon trees are relatively easy to care for and can produce fruit for many years. They are a great addition to any home garden