What is Granddaddy Purple?

Granddaddy Purple (often called GDP or “Grand Daddy Purp”) is one of the most legendary indica-dominant cannabis strains. First bred in San Francisco, California, in 2003 by Ken Estes, this strain has become a cornerstone of the cannabis world thanks to its striking purple appearance, sweet grape flavor, and deeply relaxing effects.

GDP rose to fame as part of California’s early medical cannabis movement and remains a favorite for pain relief, stress reduction, and insomnia. Today, it’s widely recognized as a classic “purple strain” that influenced many modern hybrids.

Appearance of Granddaddy Purple Strain

• Bud structure: Dense, compact, and chunky (thanks to Big Bud genetics).
• Color: Deep purple hues with contrasting bright orange pistils.
• Trichomes: Thick frosty coating that gives it a sticky, resinous texture.
• Bag appeal: One of the most visually stunning strains on the market, often called “purple eye candy.”

What strain is Granddaddy Purple? (Is Granddaddy Purple indica or sativa?)

Granddaddy Purple is an indica-dominant hybrid (about 70% indica / 30% sativa).

Its genetics are debated:

• Most accepted cross: Purple Urkle × Big Bud
• Alternative lineage claims: Mendo Purps × Skunk × Afghani
• Big Bud contributes dense, heavy yields.
• Purple Urkle provides vivid purple hues, sweet berry flavor, and calming effects.
• If the Mendo Purps/Skunk/Afghani lineage is included, it explains GDP’s extra sedative and earthy notes.

Bottom line: Yes, Granddaddy Purple is indica-dominant, strong body relaxation, mild cerebral buzz, and best for nighttime use.

What does Granddaddy Purple Taste and Smell like?

GDP is famous for its sweet and fruity aroma and grape-forward flavor.

• Aroma: Sweet grape and berry notes, sometimes compared to Kool-Aid or grape soda, layered with earthy and pine undertones.
• Flavor: Smooth, sweet smoke with a lingering candy-like grape aftertaste.
• In vape vs. smoke: Vaporizing enhances fruity sweetness; smoking emphasizes earthy, herbal notes.

Terpene profile (dominant):

• Myrcene: Musky, herbal, known for sedative effects.
• Caryophyllene: Peppery, may help with inflammation and stress.
• Pinene: Fresh pine, adds clarity and balances sedation.
• Secondary terpenes: Limonene (citrusy uplift), Linalool (floral, calming).

How strong is Granddaddy Purple? (THC & CBD levels)

Granddaddy Purple strain is a potent, high-THC strain:

• THC: Ranges 17% – 27%, with an average around 20–23%.
• CBD: Low (~0–1%).
• Other cannabinoids: Small amounts of CBG and CBC reported in lab tests.

With high THC and low CBD, GDP leans heavily psychoactive and sedative — not ideal if you’re seeking a balanced strain.

What does Granddaddy Purple feel like? (Effects)

GDP is known for its strong body high and “melt into the couch” vibe.

Reported effects:

• Euphoric and calming head buzz
• Full-body relaxation and muscle relief
• Sleepiness and couch-lock in higher doses
• Increased appetite (“the munchies”)

Best used in the evening or before bed, especially for those seeking pain relief or insomnia support.

Side effects of Granddaddy Purple

Like any strong indica, GDP comes with some side effects:

• Dry mouth (cottonmouth)
• Dry, red eyes
• Drowsiness (may be too sedating for daytime use)
• Occasional dizziness or paranoia in sensitive users

Tip: Stay hydrated and start with a smaller dose if you’re new to high-THC strains.

How much is an ounce of Granddaddy Purple?

The price of an ounce of GDP varies by location, dispensary, and quality:

• Mid-shelf: $150 - $200 per ounce
• Top-shelf: $220 - $300 per ounce
• Premium craft GDP: May exceed $300 in regulated markets

In legacy markets, ounces can go lower, while boutique dispensaries may charge premium prices for hand-trimmed, terpene-rich GDP.

Growing Granddaddy Purple

Growing Grand daddy Purple Strain is easy to moderate (good for beginners with guidance).

• Flowering time: ~8–9 weeks indoors (60–65 days)
• Outdoor harvest: Late September – early October
• Yield:
  • Indoors: ~500 g/m²
  • Outdoors: ~17 oz per plant
• Preferred conditions:
  • Temp: 70–80°F
  • Humidity: ~50% RH during flowering
  • Requires good airflow due to dense bud structure

 Tip: Cooler nights can help enhance purple coloration in buds.

Has GDP Strain won any awards?

Yes. Granddaddy Purple won Best U.S. Indica at the 2015 High Times Cannabis Cup in Denver.

Even beyond official awards, GDP is considered a legendary strain, one of the most influential purples in modern cannabis breeding.

Key Takeaways

Granddaddy Purple = indica-dominant (70/30)

Famous for grape candy flavor, deep purple buds, and relaxing effects

THC ranges 17–27%, low CBD

Benefits: pain relief, insomnia support, stress reduction, appetite stimulation

Side effects: dry mouth, red eyes, drowsiness

Price: $150–$300/oz depending on quality

Award-winning strain, 2015 High Times Cannabis Cup winner