Auto Granddaddy Purple Feminized Seeds
From $75.00
Granddaddy Purple Auto seeds deliver award-winning, high-THC genetics in a fast, beginner-friendly autoflower. Expect iconic purple buds, rich grape aromas, and deeply relaxing effects. 💜🌿
🏆 High Times “Strongest Strain” & “Best Indica winner
Larger orders often include complimentary seeds, depending on availability.
Germination Guarantee
All batches are double-tested for quality and viability using the paper towel method.
Rapid, local Ozzy delivery
All shipments are tracked- choose express post or regular. Discreet & secure.
Auto Granddaddy Purple Feminized Seeds
From $75.00
Granddaddy Purple Auto seeds deliver award-winning, high-THC genetics in a fast, beginner-friendly autoflower. Expect iconic purple buds, rich grape aromas, and deeply relaxing effects. 💜🌿
🏆 High Times “Strongest Strain” & “Best Indica winner
Larger orders often include complimentary seeds, depending on availability.
Germination Guarantee
All batches are double-tested for quality and viability using the paper towel method.
Rapid, local Ozzy delivery!
All shipments are tracked- choose express post or regular. Discreet & secure.
🌿 Granddaddy Purple Auto Seeds | Cannabis Seeds (Autoflower) – Key Info
- 🧬 Genetics: Purple Urkle × Big Bud × Ruderalis
- 🌱 Type: Autoflowering Feminized Seeds
- 🍃 Sativa/Indica Ratio: Indica Dominant (70% indica / 30% sativa)
- 🔥 THC Content: 20–27%
- 💧 CBD: Low (typically under 1%)
- 🌾 Yield: Up to 450 g/m² indoors, up to 100 g/plant outdoors
- 📏 Plant Height: Compact (60–100cm indoor / 80–120cm outdoor)
- ⏱ Crop Time: 9–10 weeks from seed
- 🍇 Flavour & Aroma: Grape, berry, floral, earthy
- 🚚 Delivery: Fast domestic shipping within Australia
- ⚠️ Legal Notice: Sold strictly as souvenirs in accordance with local laws
🌿 The Story Behind Granddaddy Purple Auto
Granddaddy Purple Auto is an iconic strain that became famous in the US and Australia in the early 2000s. In 2003, Ken Estes bred Granddaddy Purple in the San Francisco Bay Area by crossing Purple Urkle with Big Bud. The result was a compact, sedating indica with massive yields and a striking deep purple hue. Its grape-forward flavour and resin-rich buds quickly became a signature on dispensary shelves — and a cult favourite among growers and medical users alike.
Now, with added ruderalis genetics, you get the same legendary flavour and knockout body effects — without the wait or complexity of a photoperiod grow.
The auto version delivers deep purple buds, bold grape terps, and strong indica effects in just 9–10 weeks from seed. It’s a no-brainer for fans of the original looking for a faster cycle and smaller footprint.
Who is Ken Estes?
Ken Estes is a respected medical cannabis breeder and advocate, best known for creating the legendary Granddaddy Purple strain. A former motocross athlete turned wheelchair user after a spinal cord injury, Estes became a vocal champion for medical cannabis in the early 2000s. His personal experience with pain management and mobility challenges inspired him to develop strains tailored for therapeutic use — especially those with powerful body effects. Thanks Ken, you done good! 🙂
🏆 Awards & Recognition
- 🥇 High Times Cannabis Cup – Best Indica Winner (2015)
- 🏆 “Strongest Strain on Earth” – High Times Feature
- 👑 Dubbed “The Grandfather of All Weed Strains”
- 🌎 20+ Years of Global Cult Status
🧠 Mental Effects
GDP Auto leans heavily into chill. Expect a mellow onset that lifts stress off your shoulders and calms the mind. Thoughts slow down, tension fades, and a quiet focus takes over — ideal for evenings when you need to switch off without losing your spark.
- Helps calm racing thoughts and anxious spirals
- Clears mental noise while keeping you present
- Pairs well with music, movies, art, or journaling
💆 Physical Effects
The body high hits with a warm, spreading heaviness — like a thick blanket for your limbs. Aches and soreness melt away, and muscles release their grip. You stay aware and clear-headed, but your body starts suggesting the couch — and maybe a snack.
- Popular for unwinding after long days or intense training
- Soothes inflammation, soreness, and tension
- Encourages stillness, rest, and deeper sleep
💚 Therapeutic Benefits
Medical users reach for Granddaddy Purple Auto for relief from stress, chronic pain, sleep issues, and mood swings. Its fast-acting, full-body relaxation offers both comfort and consistency — all in a flavourful, easy-to-grow format.
- May assist with insomnia and poor sleep cycles
- Supports anxiety and chronic stress relief
- Used for pain, muscle spasms, and headaches
- May help improve appetite during illness or treatment
🌱 Growing Granddaddy Purple Auto
(Strictly for those in ACT with a license or those overseas where cultivation is legal.)
Granddaddy Purple Auto typically goes from seed to harvest in around 9–10 weeks. Most growers see flowering start by week 3, with buds ready to chop by week 9 or 10 — especially indoors under consistent light.
If you're growing outdoors, give it a little more time. Cooler nights and less controlled conditions can stretch the cycle to about 11 weeks. But the payoff is worth it — deeper purple hues and fatter, more resin-heavy buds.
For best results:
-
Indoors: Run on an 18/6 or 20/4 light cycle from day one
-
Outdoors: Aim for warm, dry conditions with plenty of sun
-
Consider a flush in the final 10 days to bring out full colour and flavour
Expect short, sturdy plants that finish fast and reward patience with bold purple buds and classic GDP flavour.
🌱 Indoor Growing
- Total Crop Time: 9–10 weeks from seed
- Indoor Yield: Up to 450 g/m²
- Height: 60–100 cm
- Tips: Use an 18/6 or 20/4 light cycle from day one. Cooler night temps in late flower help bring out the deepest purple hues. Low stress training (LST) can help boost yields.
🌿 Outdoor Growing
- Harvest Time: 10–11 weeks from sprout
- Outdoor Yield: Up to 100 g/plant
- Height: 80–120 cm
- Climate: Prefers sunny, dry conditions. Cooler nights will enhance the purple colour. Hardy and reliable across most Aussie climates.
🌟 Granddaddy Purple Auto User Experiences
🍇 Real Purple Flavour
👤 “It’s like grape bubblegum and wild berries in one hit. The buds turned nearly black with a proper flush — absolutely stunning in the jar.”
🧘♂️ Instant Wind-Down
👤 “One of the few autos that hits like a true indica. It’s my nightly go-to — stress gone, body relaxed, and I sleep like a rock.”
🎨 Mood Lifter
👤 “Makes me feel light and creative before easing into full body stillness. GDP has that nostalgic, comforting vibe I always come back to.”
Frequently Asked Questions
🌱 Are these Granddaddy Purple auto seeds feminized?
Yes — 100% feminized and autoflowering, designed for female-only plants and reliable buds.
📦 Do you ship within Australia?
Yes — we offer fast domestic shipping with stealth packaging. Most orders arrive within 3–5 business days.
⏳ How long does Granddaddy Purple Auto take from seed to harvest?
Typically 9–10 weeks indoors. Outdoor harvests may stretch slightly longer depending on conditions.
🍇 Will the buds turn purple like the original GDP?
Yes — when grown in cooler night temps, the deep purples come through beautifully. Anthocyanin levels remain high in the auto version.
💤 Is this a good strain for sleep and stress?
Absolutely. Granddaddy Purple Auto is widely used to support restful sleep, reduce stress, and unwind the body.
🌿 Is it easy to grow for beginners?
Very. It’s compact, low-maintenance, and forgiving — a solid choice for new growers wanting big results.
🧪 Can I use GDP Auto for medical purposes?
Many do. It’s often used to help with insomnia, anxiety, pain, and loss of appetite.
21 reviews for Auto Granddaddy Purple Feminized Seeds
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well packaged
All germinated, will review again
one looks amazing
Delivery on point.
Will be buying from here again.
I have only just planted my seed and don’t expect any problems. Looking forward to having some plants again’
All germinated.
A little bit slow due to cool weather, but all looking healthy.
Very happy
Chris S