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Granddaddy Purple
Also known as: GDP, Grand Daddy Purp, Granddaddy Purps
Purple Urkle x Big Bud
Granddaddy Purple is a indica strain (Purple Urkle x Big Bud) with THC levels of 17-23%. It features a Myrcene-dominant terpene profile and is known for deep relaxation and sleepiness. Best used during the night.
THC
17-23%
CBD
0.1-1%
Best Time
Primary Effects
Flavor Notes
Grape, Berry, Sweet, Earthy
Aroma
Rich grape and berry sweetness with subtle earthy undertones
Research Sources
8 peer-reviewed studies
Verified Via
PubMed / DOI
Evidence
Research-Backed
Updated
December 2025
About Granddaddy Purple
Granddaddy Purple is a famous indica known for its potent relaxation and striking purple appearance. With one of the highest myrcene concentrations found in cannabis, GDP delivers profound sedation that makes it ideal for evening use. The strain was introduced in 2003 by Ken Estes in California and has become a cornerstone indica for medical users seeking relief from pain and insomnia.
Terpene Profile
Primary research: Anti-inflammatory
Concentration Levels
Cannabinoid Profile
Therapeutic Profile Matches
Based on Granddaddy Purple's terpene and cannabinoid profile, it may be well-suited for these therapeutic applications:
muscle spasms
- High myrcene content supports muscle spasms & spasticity
- High beta-caryophyllene content supports muscle spasms & spasticity
- Best used night, aligning with condition needs
migraines
- High myrcene content supports migraines & headaches
- thc dominant ratio matches profile
- Best used night, aligning with condition needs
chronic pain
- High myrcene content supports chronic pain
- Best used night, aligning with condition needs
ptsd
- High myrcene content supports ptsd & trauma
- High beta-caryophyllene content supports ptsd & trauma
- thc dominant ratio matches profile
multiple sclerosis
- High myrcene content supports multiple sclerosis
- Best used night, aligning with condition needs
Match scores are theoretical
These scores are based on terpene/cannabinoid research and do not guarantee specific effects. Individual responses vary significantly. Always consult a healthcare provider.
Frequently Asked Questions
Is Granddaddy Purple good for sleep?
Yes, GDP is one of the most recommended strains for sleep support. Its exceptionally high myrcene content (often exceeding 1%) creates profound sedation. Most users find it best suited for evening or nighttime use.
Why is Granddaddy Purple purple?
The purple coloration comes from anthocyanins, pigments that develop when plants are exposed to cooler temperatures during flowering. While visually striking, the color doesn't significantly affect potency or effects.
Quick Facts
- Type
- Indica
- Genetics
- Purple Urkle x Big Bud
- Breeder
- Ken Estes
- Genetic Family
- Purple/GDP Family
- Best Time of Use
- Night
- Availability
- common
- Grow Difficulty
- moderate
Myrcene
Earthy, musky, clove-like
Want to try Granddaddy Purple? Get your medical marijuana card today.
Get Your CardEducational Information
This content is for educational purposes only and is not medical advice. Consult a healthcare provider before using cannabis products.
Strain Variability
Profiles vary between batches, growers, and growing conditions. Always check lab test results for the specific product you're purchasing.
Beyond Indica/Sativa
Effects are better predicted by cannabinoid and terpene profiles than strain classification. Focus on the chemistry, not the label.
Understanding Therapeutic Profiles
Learn how terpenes and cannabinoids work together to create each strain's unique effects and therapeutic potential through the entourage effect.
Learn About Therapeutic Profiles