A Meyer lemon tree is a small, evergreen citrus tree, known for its fragrant white flowers and sweet, juicy lemons with a slightly orange tint, considered a hybrid between a citron and a mandarin orange; it is popular for its milder acidity compared to regular lemons, and is often grown as a houseplant or in mild climates due to its compact size and ability to produce fruit even in containers; the tree was introduced to the United States by agricultural explorer Frank N. Meyer, hence its name, and thrives in full sun with well-drained soil.