Compare Research Profiles
This Is Why I'm High organizes factual claims, structured attributes, and source records found through public research.
Granddaddy Purple vs King Louis XIII
See how these research profiles differ in THC, reported effects, terpenes, lineage and source coverage.
Research profiles describe public information, not a specific product, batch or guaranteed experience.
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Choose 2–5 strains. Search by name, or pick from the popularity chart.
Selected strains
Granddaddy Purple
King Louis XIII
How to Read This ComparisonResearch context, uncertainty, and product limits
Treat Missing Data as Unknown
An empty field is not a zero, a negative result, or proof that a strain lacks that trait.
Expect Product Variation
Names can span different breeders, phenotypes, batches, and labels. This page does not verify a specific product.
At a glance
From each strain's research profile
THC
King Louis XIII lists the highest THC, at 24.5%.
- Granddaddy Purple20.5%
- King Louis XIII24.5% (highest)
Reported effects
Every profile reports relaxed, sleepy and euphoric.
RelaxedSleepyEuphoric
- Only Granddaddy Purple
- Nothing unique listed
- Only King Louis XIII
- Happy
Lead terpene
Every profile leads with Myrcene.
- Granddaddy Purple
- Myrcene
- King Louis XIII
- Myrcene
These are catalog research profiles, not a test of the product in your hand. Scan your label for its real numbers
Side by side
Granddaddy Purple
King Louis XIII
Indica-DomThis Is Why I'm High Research Profile
Granddaddy Purple
Broad profile28 listed sources
Granddaddy Purple (GDP) is a legendary 70/30 indica-dominant hybrid bred in 2003 from Purple Urkle and Big Bud. Known for its deep purple buds, grape-and-berry flavor, and myrcene-driven sedation, GDP delivers relaxed, euphoric, sleepy effects perfect for unwinding at night. With THC reaching up to 24%, this award-winning classic remains a benchmark for purple strains and heavy-bodied relaxation decades after its debut.
Indica-DomThis Is Why I'm High Research Profile
King Louis XIII
Broad profile23 listed sources
King Louis XIII is a potent indica-dominant hybrid (OG Kush x LA Confidential) packing 20-29% THC and a myrcene-rich terpene profile. Expect pine, earthy, and diesel flavors alongside relaxed, sleepy, euphoric effects. A decorated nighttime strain — award-winning for best indica flower — it's built for winding down, easing pain and stress, and drifting into deep sleep.
Broad profile5/5 areas
- Listed Sources
- 28
- Multiple listed sources
- Profile Updated
- Oct 18, 2026
- This Is Why I'm High record date
Current Limits
All 5 profile areas contain information; individual claims can still vary in support.
Coverage describes this This Is Why I'm High research profile—not product testing, safety, or batch verification.
Broad profile5/5 areas
- Listed Sources
- 23
- Multiple listed sources
- Profile Updated
- Oct 3, 2026
- This Is Why I'm High record date
Current Limits
All 5 profile areas contain information; individual claims can still vary in support.
Coverage describes this This Is Why I'm High research profile—not product testing, safety, or batch verification.
- 1Legendary 2003 indica cross of Purple Urkle and Big Bud with deep purple buds
- 2Myrcene-dominant terpene profile drives heavy, sedating relaxation
- 3Sweet grape and berry flavor with earthy, floral undertones
- 1Potent OG Kush x LA Confidential cross testing between 20-29% THC
- 2Myrcene-dominant terpene profile drives deep, couch-locking body relaxation
- 3Award-winning indica, including 1st Place at the 2015 High Times Cannabis Cup
20.5%
THC0.55%
CBDType I(THC-dominant)
Ratio1:37
24.5%Highest
THC0.5%
CBDType I(THC-dominant)
Ratio1:49
Relaxing High
Deep body calm
Relaxing High
Deep body calm
RelaxedSleepyEuphoric
RelaxedSleepyHappyEuphoric
🌙Night
Sleep & BedtimeMedical/TherapeuticStress ReliefRelaxingWatching TV/Movies
Most activities
🌙Night
Stress ReliefMedical/TherapeuticSleep & BedtimeRelaxingEvening Wind Down
Most activities
🧪Myrcene
Aromas
GrapeBerrySweet
Flavors
GrapeBerrySweet
🧪Myrcene
Aromas
PineEarthySpicy
Flavors
PineEarthySpicy
Take this comparison further
A research profile describes a strain across the whole market. These tools get closer to what is in your jar and what works for you.
- Scan the label on your jar Photograph a product label to read its real terpene and cannabinoid numbers and its High Family.
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- Pick from the popularity chart Start with the most-recognized strains, ranked from awards and editorial lists.
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