King Louis XIII is a modern hybrid-indica strain with an undocumented lineage. While the specific parentage of this cultivar remains unknown, it is widely credited to the Southern California breeding scene where it rose to prominence for its consistent performance. Cultivators can expect a moderate difficulty level when growing the plant, which offers a high yield in both indoor and outdoor environments. The plant typically reaches maturity after a 60-day flowering cycle.

The aromatic profile of King Louis XIII is defined by a complex chemical composition led by dominant limonene, followed by caryophyllene, myrcene, humulene, and beta-pinene. Further nuance is provided by trace amounts of bisabolol, linalool, pinene, caryophyllene-oxide, and terpinolene, which round out the total terpene profile. This multifaceted combination results in a distinct sensory experience that reflects the strain's specific chemical hierarchy.

Users often report that the thc-dominant flower produces effects of relaxation, calmness, and mental focus. These characteristics make the strain a common choice for managing symptoms of pain, stress, and difficulty sleeping. The influence of King Louis XIII on contemporary genetics is established through a notable list of offspring, including Cherry Louis, Crown OG, Kimura Kush, Lit in Las Vegas, Siense OG, and Zawtz.