King Louis XIII

King Louis XIII Strain: The Royal Indica of California

A true West Coast legend, King Louis XIII is a powerhouse indica with roots in two of California's most iconic strains. Revered for its crushing body relaxation, earthy pine aroma, and sky-high THC content, this regal strain has ruled dispensary menus since the early 2000s. Whether you're managing chronic pain, combating insomnia, or simply seeking a ceremonial end-of-day unwind, King Louis XIII delivers an experience worthy of its name.

Origin & Genetics

King Louis XIII — sometimes called "King Louis," "Louis XIII OG," or simply "King Louis OG" — was born in the cannabis heartland of Southern California, most likely Los Angeles, sometime in the early 2000s. The strain is the royal offspring of two legendary West Coast cultivars: OG Kush and LA Confidential, both of which carry deep SoCal pedigrees and decades of devotion from growers and consumers alike.

OG Kush, one of the most influential cannabis strains in American history, contributes the diesel-and-earth fuel aroma, the cerebral euphoria, and an undeniably thick coat of resinous trichomes. The "OG" lineage is believed to trace back to Hindu Kush landrace genetics, possibly blended with Chemdawg and Lemon Thai. LA Confidential, an award-winning pure indica developed by DNA Genetics, brings potent sedative body effects, classic afghani earthiness, and a growth structure that translates well to controlled indoor cultivation.

The combination of these two powerhouses created a strain that hit differently — arguably harder — than either parent alone. King Louis XIII quickly earned a cult following on the Los Angeles medical cannabis scene, where its reliability for treating serious pain, insomnia, and anxiety made it a dispensary staple. Today it remains one of the most sought-after indica strains on dispensary menus across legal states.

The name, a nod to the 17th-century French monarch known for his love of luxury and excess, suits the strain well. King Louis XIII cannabis is unapologetically indulgent — dense, pungent, and potently sedating. It's the kind of strain you reach for when you want the full royal treatment after a long, hard day. Cannabis laws vary by state; always check your local state regulations before purchasing or consuming.

Cannabinoid & Terpene Profile

King Louis XIII tests consistently between 20% and 28% THC, making it one of the most potent indica strains on the market. Its CBD content is typically below 1%, which means its effects are driven almost entirely by THC and its synergistic relationship with the strain's distinctive terpene profile. Understanding these compounds is key to predicting the experience — learn more in our guide to what THC is and how it works.

Compound	Type	Typical %	Primary Contribution	Aroma Note
THC (Δ9-Tetrahydrocannabinol)	Cannabinoid	20–28%	Euphoria, psychoactivity, pain relief	—
CBD (Cannabidiol)	Cannabinoid	<1%	Minor anti-inflammatory support	—
Myrcene	Terpene	0.35–0.55%	Sedation, muscle relaxation, couch-lock	Earthy, musky, ripe mango
Caryophyllene	Terpene	0.20–0.35%	Anti-inflammatory, stress relief (CB2 agonist)	Spicy, peppery, woody
Pinene (α)	Terpene	0.10–0.20%	Alertness offset, bronchodilation, memory	Fresh pine, forest floor
Limonene	Terpene	0.05–0.12%	Mood elevation, stress reduction	Citrus, lemon zest

Myrcene is the dominant terpene by a significant margin, which explains King Louis XIII's notorious sedative, couch-locking reputation. High myrcene concentrations are consistently associated with "indica-like" body effects and may enhance THC's ability to cross the blood-brain barrier. Caryophyllene — the only terpene known to directly activate cannabinoid receptors (specifically CB2) — adds meaningful anti-inflammatory and stress-relieving effects. Pinene provides a subtle counterbalance, offering a slight mental clarity that prevents the experience from becoming purely overwhelming. Explore our full terpene library to dive deeper into how these compounds shape your experience.

"King Louis XIII is what happens when you cross two California legends and let the best of both worlds fight for dominance — the OG Kush gives it soul, and LA Confidential gives it muscle. The result is something truly royal."

Effects: What to Expect from King Louis XIII

King Louis XIII is a nighttime strain by design and by reputation. Its effects are powerful, well-rounded, and firmly in the indica tradition. First-time users and those with low THC tolerance should approach with significant caution — this strain's 20–28% THC range is not ceremonial. Read our comprehensive cannabis effects guide to understand how potency translates to experience before your first session.

Onset: Effects typically begin within 5–10 minutes of inhalation, faster if dabbing concentrates derived from this strain. Edibles made with King Louis XIII will take 30–90 minutes.

Peak: The peak experience arrives around 30–45 minutes in and is characterized by maximum body weight and mental quietude.

Duration: Expect a 2–3 hour total experience with residual grogginess that can extend into the following morning for newer users or at high doses.

Mental Effects

The cerebral side of King Louis XIII opens with a gentle euphoric lift inherited from OG Kush genetics. Users often report an initial wave of happiness and mental unwinding — racing thoughts slow, anxiety softens, and a pleasant, unfocused bliss settles in. This mental effect rarely climbs toward cerebral stimulation or creativity; instead, it creates a comfortable mental fog that encourages disengagement from stress. Heavy doses can produce noticeable sedation and difficulty concentrating, making complex tasks inadvisable. Some users report mild introspective or philosophical thought patterns at moderate doses before the body effects fully take over. Not recommended for daytime use or situations requiring mental acuity.

Physical Effects

The physical experience is where King Louis XIII truly earns its crown. The body high is deep, progressive, and all-encompassing. Starting as a tingling warmth in the face and neck, the relaxation spreads downward through the shoulders, chest, and limbs until full-body sedation is achieved. Muscle tension dissolves, chronic pain subsides, and the body feels pleasantly heavy — what veteran users call "couch-lock." This makes King Louis XIII particularly valuable for those dealing with chronic pain, muscle spasms, fibromyalgia, and similar conditions. For more on cannabis as a therapeutic tool, visit our medical cannabis guide.

King Louis XIII vs. Similar Strains

How does King Louis XIII stack up against other heavy-hitting indicas? If you're shopping at a dispensary or deciding between strains for specific needs, this comparison will help you choose. Browse the full strain index for detailed guides on each.

Strain	Type	THC Range	Top Effect	Best For
King Louis XIII	Indica	20–28%	Deep sedation & body relaxation	Pain, insomnia, end-of-day decompression
OG Kush	Hybrid (Indica-dom.)	19–26%	Euphoria + body relaxation	Stress, depression, general relaxation
LA Confidential	Indica	19–25%	Full-body sedation, calm	Insomnia, anxiety, chronic pain
Granddaddy Purple	Indica	17–23%	Sedation with fruity euphoria	Insomnia, stress, muscle spasms
Skywalker OG	Indica	20–26%	Heavy relaxation, slight cerebral	PTSD, pain, sleep disorders
Bubba Kush	Indica	15–22%	Tranquil, heavy body effect	Relaxation, appetite stimulation, sleep

King Louis XIII sits at the top of this peer group for sheer potency and sed ...