OG #18 Cannabis Strain [2020 Review]

OG #18 Strain Overview
A potent strain that serves as a great example of the OG Kush family, the OG #18 strain will chill you out and leave you feeling exceptionally calm and sleepy.
Common usage
Chronic pain
Growing info
A simple strain to grow for yourself; OG #18 just needs a bit of tender love and care to encourage a higher yield.

If you were to ask anyone which two letters are most associated with smoking marijuana, the chances are that they would tell you “OG.” Though it might have once meant original gangster, it has now come to represent the tasty flavors of classic strains like OG Kush.

OG #18 is another edition in a long line of OG strains, with a super relaxing series of effects and a great taste as well. Let’s take a closer look at this strain and determine just what it is that makes it worthwhile to pick up at the dispensary.

What Is the OG #18 Strain?

OG #18 comes to us from NA Genetics, a related phenotype of the classic OG Kush. It is as close to its parent strain as you can possibly imagine, with some unique twists as well.

The OG Kush family of strains is well known for its sedative, calming effects, mixed with a whole host of diesel flavors.

The high is well known for its almost instant series of effects, hitting you quickly and without any real warning. You will feel like your entire body has shut down, leaving you relatively incapable of coordinated movement or activity.

Any negative thoughts or feelings you had on your mind will melt away, leaving you a bit forgetful of the day’s events.

Both your head and your body will feel heavy, like they are carrying around extra weight. However, it isn’t so bad that you won’t be able to lift your head or think about your surroundings.

You will feel endlessly happy, as well as a little bit silly and giggly. As the high continues to deepen, the munchies will set in; prepare for these to be strong!

All combined, this strain exhibits some common and well-loved indica effects, while also maintaining just enough sativa genetics to be pleasant. The high lasts an insanely long time – well into the evening – making OG #18 one of the best strains to take if you’re looking for an easier way to fall asleep.


As is the case with pretty much every single OG strain out there, you can expect plenty of diesel flavors. However, it is surprisingly difficult to pin down the aroma of this strain, as it comes with a whole host of other notes as well.

There is plenty of that raw, gas station diesel aroma, but also a good amount of earthiness. It is vaguely sour, perhaps even citrusy, so much so that it leaves your nostrils tingling from just smelling it. This latter effect is a lot more noticeable when you break the buds apart, especially so when you bring it closer to your nostrils.


When you first start smoking OG #18, the first thing that will hit you is a burst of diesel flavor. This should be pretty expected considering its aroma, but it is surprisingly more potent than you would first imagine. The full force of petrol and gas will overwhelm your senses, leaving you feeling like you accidentally drank some petrol.

However, there is more to the taste than just diesel – the sourness and earthiness from the aroma carry over to its taste. It doesn’t taste entirely like citrus, but there’s a general sourness to the taste.

The little bit of earth and soil from its scent will still be there in the flavor, but it will taste more like freshly tilled, dank earth.

OG #18 has a pretty similar flavor and aroma to OG Kush, only with a bit more sourness and a few intricacies to keep things interesting.


OG #18 buds are quite typical in their appearance, with a density that makes them look like they should be really heavy. However, once you touch the buds and get a good look at them, you will notice they are surprisingly lightweight.

OG #18 is super sticky, primarily due to the smattering of white trichomes. There are also plenty of orange pistils that give it a good amount of flavor and a delicate aroma.

OG #18 Strain Grow Info

Just like with many other OG strains, OG #18 is surprisingly easy when it comes to growing it yourself. It grows well both indoors and outside, being pretty resistant to any kind of difficulties or pests that tend to afflict cannabis plants.

If you want to grow it outdoors, make sure you live in a warm climate, as otherwise, you might end up with a plant that struggles to produce any useful bud. Those who live elsewhere should keep it indoors, so as to monitor its precise temperature and humidity.

Left to its own devices, assuming decent weather conditions, you will end up with a decent final yield after about eight weeks.

However, to encourage a higher quantity of bud, try and utilize some topping techniques, and practice careful pruning. By trimming off the tip of the plant and cutting away some of the under leaves, you will encourage an even larger final yield.

OG #18 strain seeds are available in a lot of dispensaries, especially online, so you shouldn’t struggle too hard finding some seeds to grow your own.

THC Content – Highest Test

OG #18 cannabis is well-known for its potent effects, as well as its knockout flavor. So, it makes sense that it has a decently high level of THC.

Expect to find about 18% THC in any individual sample of OG #18. However, some samples have tested with even more.

CBD Content – Highest Test

With all THC-rich strains, it is almost inevitable to find almost no CBD whatsoever. This is still the case with OG #18, so don’t expect to find more than around 1% CBD content.

Of course, there are still plenty of useful and helpful medical benefits associated with OG #18, even if it doesn’t have any CBD to speak of.

Medical Benefits of the OG #18 Strain

Most people generally only associate medical effects and helpful benefits with strains that contain a larger amount of CBD. However, just because there isn’t much CBD doesn’t mean you should totally discount the OG #18 strain.

For starters, the plentiful amounts of THC, combined with its quick-hitting effects, make this a great strain to soothe pain. It is very difficult to imagine suffering from physical pain or discomfort when you are riding the pleasant high from this strain.

Treating pain – especially long-term, chronic pain – is one of the most common reasons for people to use OG #18, as it makes it so that you essentially forget about any painful condition you are suffering from.

OG #18 is also great for those dealing with excessive mental anguish, such as severe depression or anxiety. This is partly because of its ability to help you relax and feel comfortable, but also because of the effects of the THC on the endocannabinoid receptors in your brain.

The most popular reason for using OG #18 is difficulty sleeping. Thanks to OG #18’s tendency to help you drift off towards the end of your high, it is the perfect way to help you settle down to sleep.

Possible Side Effects of the OG #18 Strain

The first signs of unpleasant side effects from the OG #18 strain will be the common duo of dry mouth and dry eyes. The high amounts of THC induce a dryness in your mouth and eyes, leaving you desperate for a glass of water. Keep yourself well hydrated and perhaps grab a damp towel.

Moving into more unpleasant territory, there is the unfortunate consequence of dizziness. This tends to happen if you smoke too much OG #18 at once, or if you take it while performing strenuous physical exercise.

This dizziness hits pretty quickly and can leave you quite disoriented if you are not careful. To avoid this, after smoking even just a little bit of OG #18, make sure to sit down and keep yourself comfortable while the high sets in.

Other than that, the only thing to look out for is the sleepiness it creates. While a lot of people typically use OG #18 precisely for these sedative effects, it can actually be quite distressing and overwhelming if you are not prepared for it. Make sure you don’t take any OG #18 if you aren’t prepared to fall asleep straight afterward.

There is also the occasional risk of anxious thoughts after smoking OG #18, but this is typically only linked to those who already struggle with anxiety. Additionally, this only happens if you smoke a lot at once.

Final Thoughts on the OG #18 Strain

OG #18 is a variation on a classic strain, which means that, while it is different from OG Kush, it is still similar enough to have decently predictable and pleasant effects.

With a fantastic high that hits you straight away and some incredibly soporific effects, this is a strain that is definitely worth keeping on hand for when you cannot fall asleep.

As long as you make sure to keep something comfortable on hand to lie down on after smoking it, this is a strain that works well to help you fall blissfully asleep with no concerns or problems whatsoever.

Just keep an eye on any nosy neighbors – it has a tendency to attract unwanted attention with its smell.