Robert Bergman

October 16, 2019

P-51 delivers a stress-crushing, tranquilizing high that can immobilize users who consume beyond individual tolerance. Its heavy-hitting effects are also precisely why it earned the nickname ‘The Tranquilizer Dart.’ Still, it remains fan favorite among lovers of Indica strains as it is a wonderful pre-bedtime companion.

The strain was developed by Clint Pipkin, who crossed Tahoe OG with Blackberry. The latter influenced P-51’s soothing euphoria and vigorous yields. However, it is the former that truly brought out its offspring’s top nighttime abilities such as inducing a heavy body high.

Tip: make sure to download our free Grow Bible for more information

Apart from the recreational, the Indica also has therapeutic benefits that ease the aches and pains of patients. Its distinct Indica buzz earned it a nod from DOPE magazine, landing the title of ‘Strain of the Month’ for June 2015.

Information About P-51 Strain

ORIGINTahoe OG and Blackberry
EFFECTSHappy – 10
Sleepy – 8
Euphoric – 8
Giggly – 8
Hungry – 8
FRAGRANCEPungent, earthy, chemical, diesel, spicy, herbal
FLAVORSDiesel, sour, herbal, earthy, spicy
Dry eyes – 6
Dizzy – 4
Paranoid – 2
Headache – 1
MEDICALPain – 10
Insomnia – 7
Nausea – 6
Stress – 6
Depression – 2
FLOWERING TIME OUTDOORLate September to mid-October
THC CONTENT %22% to 23%
CBD %Up to 1%
INDICA/SATIVA %100% Indica
INDOOR YIELD10 to 12 ounces per square meter
OUTDOOR YIELD12 ounces or more per plant
CLIMATECool and dry climate

* 10 is the highest
* 1 is the lowest


At up to 23%, P-51 delivers a powerful high. It can be quite overwhelming at times especially when used beyond limitations. In moderation, however, it delivers a pleasant high even for beginners.

With that said, its initial onset begins with a rush of euphoria that spreads throughout the mind. It leaves one feeling happy from within as it clears away distracting thoughts. The behavioral change is immediate too. Smiles reach ear to ear as a flurry of giggles escape the mouth.

It is best to prepare snacks ahead of time. This is because, as the subtly stimulating buzz trickles down from the temples, it also invigorates the stomach. Hence, it should come as no surprise that users soon begin to feel a little hungry. Having food nearby will not only save time in heading to the kitchen, but also allow one to prepare for the upcoming Indica buzz.

P-51 Strain Effects
P-51 Strain Effects – Image Powered by leafly.com

After about an hour or two, the once subdued sensation begins to intensify. It envelops the muscles in a deeply relaxing high until the body becomes heavy. In all likelihood, as the effects persist, one’s eyelids begin to droop until users inevitably fall asleep.

Because of its heavy-hitting effects, P-51 is best reserved for early evening use as a pre-cursor to a sumptuous dinner as well as a relaxing cap off.


P-51 has a complex fragrance profile. It pairs pungent overtones of wet soil with the distinct chemical undertones of diesel. Broken apart or combusted, it releases a spicy scent with an herbal tinge.


Drawn in, P-51 explodes in the palate with a strong diesel flavor that entices users for another puff. The subtle sourness later develops into an herbal taste with earthy undertones lurking beneath. On the exhale, a spicy aftertaste lingers in the mouth.

Adverse reactions

Dry eyes and a cottonmouth are two common reactions to smoking marijuana, regardless of the strain. Regardless, all are mild and can easily be remediated by staying hydrated throughout the day.

P-51 Strain Reactions
P-51 Strain Reactions – Image Powered bP-51 Strain Reactions leafly.com

Although rare, dizziness and paranoia are also possible while smoking P-51. This is especially true for people who use beyond individual tolerance or are susceptible to the condition. While most only experience a headache, it is still important to pace consumption of the bud.


P-51 has a strong tranquilizing high that is most often used to relieve the daily stress that comes with work, school, and life in general. However, it can also be a source of comfort for patients dealing with chronic pain either as a result of disease or fatigue.

Its muscle relaxing properties soothe the body, removing aches in its wake. Through a similar mechanism, P-51 also stabilizes turbulence in the stomach that can often result in vomiting. As such, cancer patients may use the strain to diminish the nauseating side effects of chemotherapy.

P-51 Strain Medical
P-51 Strain Medical – Image Powered by leafly.com

The same psychoactive compound also has a calming effect on the mind. For example, its soothing euphoria calms the mind of overwhelming dread while boosting the mood. For this reason, it is a wonderful stress reliever as well as anti-depressant that can manage symptoms of mental health issues like depression, anxiety, and PTSD.


P-51 is not a tall plant. Its stalks are short and thick with a good number of branching. Not to mention, it has a sturdy frame that can withstand a variety of unpredictable growing conditions such as fluctuating temperatures.

Pruning the compact plant is necessary when cultivating it indoors. Not only will this increase airflow, it will also let more light circulate in the lower nodes. Apart from that, removing dying or dead branches or leaves will distribute nutrients to healthier parts to create bigger colas and produce more budding sites.

TIP: Find seeds similar to P-51 at our marijuana seed bank

Flowering Time

P-51 has an indoor flowering period of 7 to 9 weeks. Once ready for harvest, it yields at between 10 to 12 ounces of buds per square meter. However, under the Sea of Green method and the expert care of a seasoned grower, it can produce much more.

In the northern hemisphere, P-51 blossoms from the last week of September to the middle of October. A vigorous producer, each plant is expected to produce at least 12 ounces of buds.

Have you ever smoked or grown your own P-51? Please let me know what you think about this marijuana strain in the comments below.


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]

P-51 Review

There are no reviews yet. Be the first one to write one.


Please Post Your Comments & Reviews

Your email address will not be published. Required fields are marked *

World Icon

500 Helpful Articles

200 detailed grow guides

Group Icon

35,000+ Daily Visitors

500,000+ Grow Bible readers

Plant Icon

100 Hand-Picked Strains

8,000+ connected businesses