Granddaddy Purple Strain

May 25, 2021

Granddaddy Purple strain is another heavy indica strain that is not of the subtle variety. It is widely used as a powerful knock-me-out – and has therefore become a popular choice for those seeking a heavy body stone.

Its buds are also known for being distinctly good-looking in nature – with the buds boasting of a purple hue mixed with red hairs and some crystallization.

Sativa/Indica % Indoor Yield Outdoor Yield Flowering Period
100% Indica14 to 17 ounces per square meter 17 ounces per plant 8 – 11 weeks indoors, mid-October outdoors.

A creation straight out of Ken Estes’ San Francisco lab – Grand Daddy Purple, otherwise known as GDP is a potent indica strain. It is popularly used in the treatment of many psychoactive conditions, and in the management of pain.

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Grand Daddy Purple’s parentage stems from the crossing of two indica strains, namely Big Bud and Purple Urkle. This strain is a native of California, and has earned its reputation for being a reliable relaxant and stress-buster.

Information About Grand Daddy Purple Strain

Origin The Grand Daddy Purple is a product of crossbreeding
Purple Urkle and Big Bud, two popular Indica strains!
Plant type 100% Indica
THC Up to 23%
Difficulty Easy
Climate Indoors
Plant Size Compact
Flowers 9 weeks
Yields 14 to 17 oz per 3x3ft
Taste & Smell Berry | Fruity | Grape | Sweet
Uses Insomnia | Lack of appetite | Pain | Stress
Effects Stress
Lack of appetite
ClimateBest growing in a humidity controlled environment (GDP likes humidity to hover around 50%).

Effects of GDP Strain

Because GDP is a classic indica, it can create a strong mental high, leaving you to let your thoughts calm down and generate a cool brain buzz. For those seeking a deep and relaxing recreational high, Grand Daddy Purple offers just that. It is a powerful sleep-aid, which makes it the perfect night-time puff.

Granddaddy Purple Strain
Granddaddy Purple

Not only does it help you unwind and let go of all your stresses, but it leaves you feeling happy and content. This is what makes it a great companion for a warm bubble bath at the end of the day.

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A sense of euphoria can also be noticed in the effects of Grand Daddy Purple, and with it a sense of elation, and a strong desire to laugh. Sometimes, GDP can encourage a voracious appetite, but isn’t present in every user.


Earning its name and reputation, Grand Daddy Purple famously smells like grapes and berries. It is said that a small chunk of GDP can fill a room with its aroma, with a certain sweet and fruitiness lingering in the air.


Grand Daddy Purple tastes much the way it smells – like grapes and berries. It is reminiscent of an earthy pine mixed with the sweet presence of citrus fruits. Some have also described its exhale as something that would remind you of a grape popsicle.

Adverse reactions

Among the few side effects of Grand Daddy Purple, that have been reported, is dehydration and the sensation of a dry mouth and dry eyes. Other adverse reactions to GDP are mild cases of dizziness and sometimes paranoia, although quite rarely. It is also known to cause a very slight yet lingering headache for some.

Used widely to help manage pain, Granddaddy Purple has proven to be very useful for patients with chronic and acute conditions alike.



Grand Daddy Purple made its way into the scene originally as a medically created strain. It has been touted as a strong healer among other hybrids, and has gained traction it its popularity as a powerful de-stresser.

Grand Daddy Purple
Granddaddy Purple

GDP is also perfect for those who suffer from irregular sleep patterns, for its ability to relax both the mind and body to aid one to a night of restful sleep. In many cases, it is used in the battle against anxiety and depression, relieving the mind of its worries.

For cancer patients, it has also proven to help rid one of nausea brought on by radiation and chemotherapy. This makes it also an important factor in restoring appetite in those who are under medication or suffer from anorexia nervosa.

Indoor Yield

Kept indoors, GDP is quite happy in hydro or soil alike, with it flowering as average of about 8 – 11 weeks. It can yield up to an estimated 19 ounces per square meter.

Outdoor Yield

When grown outdoors, Grand Daddy Purple has the capacity to grow into a dense bush, generating a generous yield at about 17 ounces per plant. It is ready for harvest around the weeks of Mid-October.

Our free little Harvest Guide will help you determine the best moment to cut your plants. Download it here.


Big Bud
Purple Urkle

FAQ About Grand Daddy Purple Strain

What is the Grand Daddy Purple strain yield?

Grand Daddy Purple yields 14 to 17 ounces per square meter indoors and 17 ounces per plant outdoors.

How much THC does Grand Daddy Purple strain have?

Up to 23%

What are the origins of the Grand Daddy Purple strain?

Grand Daddy Purple was first bred in California, by crossbreeding
Purple Urkle and Big Bud.

Have you ever smoked or grown your own Grand Daddy Purple? Please let me know what you think about this marijuana strain in the comments below.


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The founder of I Love Growing Marijuana, Robert Bergman, is a marijuana growing expert that enjoys sharing his knowledge with the world. He combines years of experience, ranging from small-scale grows to massive operations, with a passion for growing. His articles include tutorials on growing... [read more]

Granddaddy Purple Strain Strain Review

Perfect for sleep

Rated 5 out of 5
12 April 2021

I put it in canna butter, keep it frozen, then every night put the proper amount in a cup of milk and water and pop it in the microwave to heat up. I sleep so well. As an older person, it is delightful, I think of it as milk tea as in Tibet. I take 1.4 grams, my spouse 4. Terrific.


Love the buzz and grape-like sweetness

Rated 5 out of 5
19 March 2021

I’m not a fan of most Indica strains until I tried GDP! I was like – “WOW” I love this kind of buzz! Very pretty buds with purple, green, and orange hues. It was sweet and tasted like grapes. Gotta make this one of my new mj faves!


Great for Training

Rated 5 out of 5
8 February 2021

I currently have two gdps going and they are great for training and using a scrog net. Seed bank stated they’d be ready for harvest in 7 weeks 7 1/2 weeks in they probably have 2 weeks to go. Overall very happy so far with this strain would definitely Grow again

The Professor

Love this strain !

Rated 5 out of 5
29 April 2020

This hard-hitting Indica will have you out in no time. Not to be taken lightly, Grand Daddy Purple is the ultimate herbal sedative. It’s also one cool looking bud!
As for the taste, it’s very sweet and fruity. If you have trouble sleeping then this strain is absolutely your best herbal remedy.


Please Post Your Comments & Reviews

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  1. By Anthony ,19 Jan 2017
    Robert . . .the Grand Daddy Purple . . the name itself seems to indicate the high quality and nature of its users beneficial use, and as I understand this Indica strain was crossed and developed for a few specific […]Read More
    1. By Cornman ,26 Apr 2018
      Oh my God this is absolutely torturous to read, stop trying to sound intelligent with your overly extravagant and completely butchered language, you clearly don't have a clue how ridiculous this sounds.
  2. By Jasper ,19 Jan 2017
    I've been looking everywhere for GDP Feminize seeds but can't find it to save my life. I clicked on the link here but it took me to ILGM seeds but Robert I can not find them. Please help
  3. By Anthony ,20 Jan 2017
    Hi Jasper . . maybe I can help you out on your thoughts and frantic search to find about " Grand Daddy Purple" ... keep in mind that GDP was originally developed in laboratory for specific purposes to appease the […]Read More
  4. By Jasper ,20 Jan 2017
    Anthony no disrespect to you but I have to disagree to what you said. I'm from Northern California but moved away 3 years ago but before I left GDP was everywhere. Not just in the dispensaries either. I personally knew […]Read More
  5. By BILLY ,23 Jan 2017
    1. By latewood_ILGM ,25 Jan 2017
      Bill, I suggest you join our support forum at There we have many helpful knowledgeable and friendly members and experts to help guide you through any issues you have and allow you to grow successfully from start to finish. […]Read More
  6. By Peter king ,14 Sep 2018
    I grow grandaddy purple x Harlequin every year outside, they grow to 8ft tall by 6ft wide, with a trunk rather than a when, they grow to huge dense bushes which start green and turn dark purple halfway into flowering, […]Read More
  7. By Greg ,21 Apr 2019
    Oder my mind x pack purple seeds impressed they all pop but one. They are looking great.
  8. By John ,06 Jun 2019
    Robert. I really like reading your articles. I live in in northern Kalifornia, Sierra foothills. 1750' elevation. Mild springs, 80+ Hot summers 90-100's, fall, low to mid 80's. Which strain do you recommend with high yield in my area. Thanks […]Read More
  9. By Lindsey McCoy ,28 Jul 2020
    Hwy I'm currently growing four of the grand daddy purple it's amazing I love the buds on it I'm a experience grower for ten years now this is by. Far one of the best top knotch buds I've ever grown
  10. By %title% ,04 Feb 2021
    […] Pie seeds gain their indica dominance from the strain Granddaddy Purple, but there’s also a noticeable sativa influence from Durban Poison. Unsurprisingly, the […]
  11. By Louis ,31 May 2021
    I’d like to know when I should pick the buds. The plant looks nice and it’s over from when supposed to be done. To me it looks like it still has a couple of weeks to go. So should I […]Read More

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