Granddaddy Purple Cannabis Strain Review in 2023

Over the last few years, the world-famous cannabis strain, Granddaddy Purple has been much engaged in stirring up some THC-filled waves across the globe. Discover all you want to know about this creation of Ken Estes in our entire Granddaddy Purple cannabis strain review.

Even if its roots are in a small West Coast, this strain is famous among the cannabis society and marijuana experts. 

Many cannabis users in California have moved on to the effects of Granddaddy Purple, so much so that it has most probably become one of the most prominent household names of any of the purple-colored cannabis strains.

Granddaddy Purple Strain Review


Granddaddy purple cannabis strain reviewGranddaddy Purple, also known as Granddaddy Purp or GDP, is a robust and Indica-dominant hybrid that was first developed in Northern California in 2003 by breeder Ken Estes.

This strain is very similar to another cannabis strain called Grape Ape, and myth has it the two might be the same.

However, it is a crossbreed between Purple Urkle and Big Bud, GDP was later backcrossed into itself.

Granddaddy Purple has an average THC content of approximately 17 percent and is typically high in Caryophyllene, alpha-Pinene, and Humulene.

Like most Indica strains, this strain has been described to help you rest and sleep, making it an ideal strain for a late evening or nighttime use.

A genetic winner, the buds of GDP got the first position for Best U.S. Indica in 2015 at the Denver High Times Cannabis Cup.

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Genetics of Granddaddy Purple

Ken Estes and his team produced this ultimate Indica hybrid in the San Francisco Bay Area in 2003 by mixing two strains with excellent genetics - Purple Urkle and Big Bud.

The outcome of these two, Granddaddy Purple, is the spitting copy of its parents' two best attributes - the dark and deep purple hue from Purple Urkle and the large, solid buds of Big Bud.

Cultivation of Granddaddy Purple

Granddaddy Purple prefers a well-ventilated growing place to flourish well, and you can cut the plant to make more space for it to thrive.

Granddaddy Purple strain grows relatively small plants to an average height of 60 to 100 cm when cultivated indoors. However, outdoors the plant can simply reach a height of 180 cm.

Granddaddy purple cannabis strain review

The oversized buds may begin to pull down the plant, primarily if grown outdoors. When grown indoors, the plant should be small and stocky enough to carry the weight.

You may need to prepare to give some support around the 60-day time if you see the buds starting to wear down the plant's structure.

Growing Difficulty

Granddaddy Purple Seeds are appreciated for being a strain with high resistance to molds and fungus.

Therefore, this strain is an excellent option for both amateur growers without much knowledge and seasoned breeders who like high-quality weed.

Thus, Granddaddy Purple is very easy to raise, as long as you pay close attention to its moisture, which it prefers at about half.


The main difficulty with GDP, as we stated earlier, is maintaining continuous mindfulness of moisture levels, which need to be around 50%.

Indoors, the plant requires enough space to grow while outdoors, GDP flourishes in warm, sunny, humid weather.


The appearance of these dense and massive buds just ties the whole beauty of the harvest collectively: bright green leaves blend seamlessly together with lively purple signs that excite and ignite the energy of this incredible weed.

Granddaddy purple cannabis strain review

And don't miss out those yellow-orange pistils that curl and twist amongst the leaves, topped off with a compact crystalline THC layer that makes it seem nearly as if a fresh coating of snow has fallen upon the buds.

Flowering Time

Although the grower can partially control the flowering time, the plant is usually ready for yield after a flowering time of 8 to 11 weeks.

During flowering, the buds will grow lavishly covered with a thick coating of THC trichomes and gorgeous red/purple bits.


Grown indoors, GDP develops pretty well in hydro or soil similarly, with it blooming as an average of about 8 – 11 weeks. It can harvest up to approximately 19 ounces per square meter.


When planted outdoors, Granddaddy Purple has the ability to turn into a compact bush, producing a substantial yield at about 17 ounces per plant. It gets ready for harvest nearly in the weeks of Mid-October.


You will get the highest crop if you grow GDP outdoors. Outdoor growers preferably harvest in mid-October and can harvest up to 450 grams per plant.

Indoor breeders harvest, on average, a maximum of 400 grams per m2. Of course, these calculations depend on the right breeding circumstances, but the experienced growers must undoubtedly be able to accomplish these results.

For optimal outcomes, keep temperatures within the 70's during the grow period and keep the moisture between 50-55%.

Flavor and Fragrance of Granddaddy Purple

The fragrance of Granddaddy is pretty strong with signs of sweet grape and berry intensified by a heavy, spicy pungency that's pretty sharp in itself, too.

Gaining its name and fame day by day, Granddaddy Purple scents like grapes and berries. It is said that a tiny chunk of GDP can furnish a room with its pleasant aroma, with a particularly sweet and fruitiness lingering in the air.

This bud has a super-rich grape flavor that has a profoundly pungent sharp aftertaste that can surprise some users.

Granddaddy Purple feels much the way it smells – like grapes and berries. 

It is suggestive of an earthy pine combined with the sweet presence of citrus fruits. Some have also explained its breath as something that would recall you of a grape popsicle.

Effects of Granddaddy Purple

The results of Granddaddy Purple on the mind and body are perhaps powerful, but surprisingly not in a negative way.

The high provided by Granddaddy Purple hits you initially with a cerebral charge that blows you feeling totally euphoric, although with a slight numbing impact.

A slightly psychedelic outcome will gradually wash over your mind, leaving it drifting through trippy fantasies as your body slips into a deep sensation of relaxation and harmony.

Its dominant effects are clearly detectable in both mind and body, producing a union of cerebral happiness and physical recreation.

While your ideas may float in a soothing buzz, your body will be more likely to discover itself set in one place for the span of the effects of GDP.

Thus, perfect for nighttime use, Granddaddy Purple hits both the body and mind artistically but soon disappears into a smooth body buzz as most heavy Indicas do.

If these are the impacts you are looking for, just remember that Granddaddy Purple is one of the best Indica-dominant cannabis strains you can pick from on the market.

It combines the heavy narcotic effects of a potent Indica with the uplifting cerebral high of a typical Sativa for what many have defined as "the perfect high."

Since it offers the perfect high experience, it is widely consumed as a potent knock-me-out – and has, therefore, become a favorite choice for those seeking a heavy body stone.

In fact, it is rapidly becoming a favorite not only in the U.S. but in the international community as well.

New cannabis users should take GDP with caution as this strain can carry a powerful punch. We'd suggest starting with a single or two hits and wait a few moments before opting to use more.

Check out this amazing video on Granddaddy Purple Cannabis Strain Review by ILGM!

Medical Benefits of Granddaddy Purple

Granddaddy Purple resides on the top shelves at the dispensaries as it is beneficial for consumers looking to fight pain, stress, insomnia, appetite loss, and muscle spasms.

With outcomes like these and a dominant 20-25% THC level and almost 1% average CBD level, Granddaddy Purple is a classic bud for counteracting the synonyms of chronic pain, muscle spasms, sleeplessness, and appetite loss.

The terpene profile from this batch of Granddaddy Purple had a strong berry influence.

The significant pain-relief attributes are the reason we found this strain to be ideal for patients looking for a relaxing session that will support to give relief to most physical diseases.

GDP is used for many medical ailments and sicknesses within both the physical and mental spheres.

Physically, Granddaddy Purple is apparently most relied on to reduce the symptoms of pain, particularly for people suffering from chronic pain, which of course, can be very debilitating.

Moreover, loss of appetite, sleeplessness, depression, stress, and anxiety can all find relief with the help of this cannabis flower.

When trading with a physical condition such as pain, insomnia, or loss of appetite, a larger than usual dose of this weed might help in order to experience the full medicinal benefits.

Side Effects of Granddaddy Purple

Adding to its lengthy listing of benefits, Granddaddy Purple may also have a few possible adverse side effects.

Few users encounter something scary after using this cannabis strain. However, you don't have to bother about an immediate onset of paranoia, anxiety, or overwhelming thoughts.

If you are sensitive to THC-induced complex, you may need to stay away from GDP or any potent cannabis strain for that matter and instead go for strains with less of a break between the THC and CBD ratio. For instance, Harlequin.

The majority of people reported dry mouth, also known as cottonmouth and dry eyes, after inhaling some of this marijuana. Still, these two symptoms are easily controllable with just a little extra preparation and planning.

The first solution to save yourself from the cottonmouth is to stay hydrated before, during, and after your consumption of marijuana, and stay alert of your overall fluid intake.

You can keep a bottle of freshwater nearby at all times throughout your high, particularly with a cannabis strain like Granddaddy Purple, which is likely to create couchlock.

Also, by obtaining a pack of moisturizing eye drops before your consumption, you can withdraw any bothersome and undesirable trouble that might arise from dry eyes later.

For most marijuana strains, a jug of water and eyedrops are like a survival kit that can frequently end up becoming an experience-saving necessity.

What We Liked

  • Excellent Indica-dominance traits
  • Easy to cultivate
  • Sweet berry and grape aroma
  • The stunning appearance of buds
  • Deep relaxation with a calming buzz
  • Beneficial for symptoms of insomnia and loss of appetite

What We Didn't Like

  • Sudden feelings of adverse effects
  • Not suitable for daytime use

Final Thoughts

If you are in search of a unique marijuana strain that will ease you, resist you, and leave you feeling unbelievable all at the same time, GDP is no doubt a vital yield that you have got to get your little green lights of mind on!

We hope you have liked reading this in-depth Granddaddy Purple cannabis strain review, and that you not only discovered it to be entertaining but also informative and educational.

Please keep this in mind that consumption of cannabis is the sole responsibility of the consumer, and discretion should be taken.

Christopher Andrews
I am Christopher Andrew, the owner of 420 Expert Adviser. I have been in cannabis cultivation for more than ten years, and I'm sharing my experience with you guys using this blog!

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