Key lime is a vigorous large shrub or small tree in the Rutaceae family that is best known for its green to yellow (when ripe) fruit that is very juicy and aromatic. The plant grows best in light to medium textured soils that are aerated and have good drainage. The plant will not do well in heavy clay soil or soils that drain poorly. The plant does not tolerate standing water or flooding. The plant prefers a pH range of 5 to 8 and is sensitive to high salinity. It is very drought tolerant once established. Do not overwater. Key lime should be fertilized sparingly. Pruning is only required to shape it, remove dead wood, limit plant size, or thin fruit. Plant outside in full sun for year-round enjoyment in tropical or subtropical climates or put in a planter for movement inside when the weather turns cold.