Compare Research Profiles
This Is Why I'm High organizes factual claims, structured attributes, and source records found through public research.
Granddaddy Purple vs Rockstar
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
Rockstar
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
Granddaddy Purple lists the highest THC, at 20.5%.
- Granddaddy Purple20.5% (highest)
- Rockstar18%
Reported effects
Every profile reports relaxed, sleepy and euphoric.
RelaxedSleepyEuphoric
- Only Granddaddy Purple
- Nothing unique listed
- Only Rockstar
- Happy
Lead terpene
Each profile leads with a different terpene.
- Granddaddy Purple
- Myrcene
- Rockstar
- Humulene
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
Rockstar
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
Rockstar
Broad profile22 listed sources
Rockstar is a legendary indica-dominant hybrid (70/30) that delivers powerful relaxation with surprising mental clarity. Created by crossing Rockbud and Sensi Star, this award-winning strain features a complex terpene profile dominated by spicy caryophyllene and earthy humulene, producing pungent aromas of sweet skunk, grape, and diesel. With THC levels of 14-22%, Rockstar provides euphoric uplift followed by deep body sedation, making it ideal for evening stress relief, pain management, and sleep support. A British Columbia classic that earned second place at the 2012 High Times Cannabis Cup.
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
- 22
- Multiple listed sources
- Profile Updated
- Sep 14, 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
- 1Award-winning indica-dominant hybrid with 70/30 genetics and 14-22% THC
- 2Dominant caryophyllene and humulene create spicy, earthy, grape-diesel aromatics
- 3Delivers euphoric mental clarity followed by deep, therapeutic body relaxation
20.5%Highest
THC0.55%
CBDType I(THC-dominant)
Ratio1:37
18%
THC0.505%
CBDType I(THC-dominant)
Ratio1:36
Relaxing High
Deep body calm
Balancing High
Steady and easygoing
RelaxedSleepyEuphoric
RelaxedSleepyHappyEuphoric
🌙Night
Sleep & BedtimeMedical/TherapeuticStress ReliefRelaxingWatching TV/Movies
🌙Night
Stress ReliefMedical/TherapeuticSleep & BedtimeRelaxingWatching TV/MoviesCreative Projects+1 more
Most activities
🧪Myrcene
Aromas
GrapeBerrySweet
Flavors
GrapeBerrySweet
🧪Humulene
Aromas
SpicyPungentSkunkyEarthy
Flavors
SweetSpicySkunkyEarthy
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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