Granddaddy Purple Seeds

Royal Queen Seeds
Feminized
Photoperiod
Netherlands
0.0

Granddaddy Purple Strain Characteristics

Strain brand Royal Queen Seeds
Strain Gender Feminized
Strain light cycle Photoperiod
Suitable for growing Outdoor, Indoor
Strain THC level 20%
Strain CBD level Low
% Sativa/ Indica/ Ruderalis 25% Sativa / 75% Indica
Strain harvest 1.5 - 1.6 oz/ft² indoors
19.4 - 21.2 oz/plant outdoors
Indoor flowering time 55 - 65 days
Strain outdoor finish Early October
Strain height 27.6 - 47.2 inches indoors
47.2 - 59.1 inches outdoors
Strain effect Sofa gets persuasive
Genetics Purple Urkle x Big Bud
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Granddaddy Purple has that velvet-curtain energy: sweet berry smoke wrapped in deep purple drama, with a nighttime mood that knows when the party should move to the sofa. This Indica-dominant classic keeps things plush, bringing 20% THC and a deeply relaxing effect that still leaves a little euphoric glow in the room.

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Disclaimer: This website is intended for adults 21+ only. Cannabis seeds sold by Herbies contain less than 0.3% THC and are legal in the United States under applicable federal law. They are sold as collectible souvenirs and for genetic preservation purposes. The legality of germination and cultivation depends on your state and local laws. It is your responsibility to know and comply with the laws in your jurisdiction before ordering, possessing, or germinating seeds. Herbies does not encourage or condone any unlawful activity. Any information on this website is provided for educational purposes only and is not medical advice.

Description

Granddaddy Purple Strain Info

Granddaddy Purple is a feminized photoperiod strain with a 75% Indica/25% Sativa profile, 20% THC, and low CBD. It grows as a sturdy, low-maintenance plant with a manageable structure, making it friendly for indoor setups and outdoor gardens alike. The experience leans heavily toward physical relaxation, while the mood lift keeps it from feeling flat. Flavor is where GDP really earns its reputation: sweet blueberry notes meet a soft fruity finish, giving the smoke a dessert-like character without turning too sugary. Its yield potential is comfortably above average, especially for growers who want a classic Indica-style strain with strong bag appeal.

Genetics

Granddaddy Purple comes from Purple Urkle and Big Bud. Purple Urkle brings the deep purple expression, sweet berry profile, and calming Indica mood. Big Bud adds productive structure and a heavier harvest influence, with Afghan and Skunk roots behind its reputation. Together, these parent lines create a compact, colorful hybrid that delivers dense flowers, long-lasting effects, and the kind of visual charm that made GDP famous.

Flowering Time

Granddaddy Purple flowers in 55-65 days indoors, or around 8-10 weeks depending on setup and phenotype. Outdoors, harvest arrives in early October, giving the plant enough time to develop its color and sweet terpene profile before cooler weather takes over. Keep conditions stable during late bloom – GDP looks relaxed, but it still appreciates a clean finish.

Yields

Indoors, Granddaddy Purple can produce around 1.5-1.6oz/ft² (450-500g/m²) under proper lighting and steady care. Outdoors, plants can deliver about 19.4-21.2oz (550-600g) per plant in favorable conditions. For a medium-sized Indica-dominant cultivar, the output is generous and nicely matched to its low-maintenance personality.

Effects

The high begins with a soft euphoric lift, like the day just got dimmer in the best possible way. Soon after, the Indica side settles into the body, easing tension and inviting a slower rhythm. Granddaddy Purple works beautifully after a long day, especially when the goal is to unwind without overthinking the furniture. It is a strong nighttime pick, with enough depth to help the mind step back and let the body take the lead.

Sleepy
Relaxed
Euphoric

THC and CBD Levels

With 20% THC and low CBD, Granddaddy Purple offers a potent but approachable Indica experience. The THC supports its long-lasting relaxing effect, while the low CBD level keeps the profile mainly psychoactive. It is not the loudest modern heavyweight, but it has real staying power – the kind that built its reputation over time.

Smell and Taste

Granddaddy Purple leans sweet from the first note, opening with blueberry richness and a fruit-forward aroma. There is also a candy-like softness in the background, balanced by a faint pine edge that keeps the profile from feeling too syrupy. The smoke is smooth and cozy, like berry dessert served after everyone has stopped checking their phone.

Sweet
Fruity
Blueberry

Grow Tips

Granddaddy Purple reaches 2.3-3.9ft (70-120cm) indoors and 3.9-4.9ft (120-150cm) outdoors. Its manageable height and sturdy structure make it easy to work with, while the dense buds benefit from good airflow. Color expression may become more noticeable late in flower, especially when conditions are stable and nights are slightly cooler.

  • Use light defoliation to improve airflow around dense flowers.
  • Keep humidity controlled during late bloom to protect compact buds.
  • Support heavier branches if plants start loading up near harvest.
  • Maintain steady feeding rather than pushing nutrients too hard.
  • Allow full ripening for deeper berry flavor and stronger relaxation.

Granddaddy Purple Seeds for Sale

Searching for feminized seeds with iconic purple appeal, sweet berry flavor, and a deeply relaxing Indica effect? Look no further than Granddaddy Purple. Buy online from Herbies and experience top-tier quality, global delivery, and unbeatable prices.

Strain FAQ

Is it legal to order cannabis seeds to the USA?
Yes. At Herbies, cannabis seeds are sold as collectible souvenirs. We ask you to check your local laws before ordering, as by ordering you confirm that you are complying with them.
Is this strain suitable for outdoor growing in the USA?
Absolutely. is an excellent choice for outdoor cultivation in the climate of the USA. To ensure the best possible results, we recommend checking the strain's specific preferences in the "Characteristics" section and matching them with your local conditions.
What are the most popular payment methods for customers in the USA?
We offer a variety of secure payment options for customers in the USA. These include major credit and debit cards (Visa, Mastercard), bank transfers (including SEPA), and cryptocurrencies like Bitcoin and USDT. For the most accurate and up-to-date list of methods available for your specific order, please proceed to the checkout page.

Why Buy Seeds from Herbies in the USA

  • 20+ years of trust from the grower community.
  • Guaranteed authentic genetics.
  • Stealth, fast shipping directly to the USA.
  • Multiple secure payment options for your convenience.
  • Free seeds and gifts with every purchase.
  • Germination guarantee on all freshly stored seeds.
  • Backed by thousands of positive reviews worldwide.

USA Shipping FAQ

Do you ship to the USA?

Yes. We ship to the USA. Estimated delivery time is 2-5 business days.

Is my shipping discreet?

Yes. We ship in plain, unbranded packaging. The envelope shows only the necessary delivery details - there’s no mention of Herbies and no indication of what’s inside. For extra privacy, you can choose our optional stealth (“Ninja Mode”) packaging, where the seeds are concealed inside a small souvenir.

When will you ship my order?

We assemble and dispatch orders within 24 hours after payment has been received during working days. On rare occasions, it might take more time than that. Orders placed on weekends are processed and shipped on the next working day.

Once I’ve placed an order, how do I get my tracking number?

You’ll get an email with the tracking number after your order is dispatched. Orders are normally processed on weekdays and dispatched within 24 hours (rarely, it can take longer).
If your tracking number is not in your inbox, be sure to check your spam and promotions folders. If the tracking message is not there, please contact us via [email protected] or our live chat.

What company do you ship with?

Currently, we ship with Correos, UPS, Fedex, DHL and Tipsa. You can find more info on shipping and calculate costs/estimated time of delivery on our Shipping page.

What if I haven’t received my order?

If your order hasn’t arrived, please contact [email protected] or submit the support form on our website.
If your order has arrived but there’s a problem, please contact [email protected].

Do you send to P.O. Box addresses?

Delivery to P.O. Boxes isn’t available in all countries. For an exact answer for your country, please email [email protected] or contact us via the live chat on our website.

Written by
Ethan Cole
Cannabis cultivation expert and writer

Cannabis cultivation expert with over a decade of experience in indoor growing and grower education.

Reviewed by
Sylvia Johnson
Indoor growing expert and cannabis writer
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Granddaddy Purple Strain Reviews
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