Blackwater Strain Review – Bonza Blog

Blackwater is a mostly Indica strain developed by The Cali Connection. Its remarkable THC content ensures that people who use it can find peace and comfort before falling asleep.

Curiously, it comes with two variants with Mendo Purps serving as the universal genetic base. Make no mistake about it, though; it derives much of its structure and traits from a couple of OG Kush phenotypes.

It is unclear at the moment which came first, but the cross between Mendo Purps and San Fernando Valley OG IBL Male seems widespread, or at least, better known. From this union, the breeder produced regular seeds.

Meanwhile, the other variant is a cross between Mendo Purps and Tahoe OG S1. For many home growers, it should appeal more as it comes as feminized seeds.

TIP: Looking to buy Blackwater seeds? Check out this ILGM cannabis seed shop

Both OG phenotypes do not differ too much from each other with regards to traits. As such, one can say that the two Blackwater variants are practically the same. And, carrying on with the tradition of excellence in its lineage, it also placed 3rd in the 2014 High Times Medical Cannabis Cup Los Angeles.

Blackwater Strain Quick Facts
Genetic Lineage Mendo Purps x San Fernando Valley OG IBL Male;
Mendo Purps x Tahoe OG S1
Sativa / Indica Ratio Mostly Indica
THC % 18 to 22%
CBD % 0.2%
Climate Warm climate
Flowering Period 7 to 9 weeks / Late September to early October
Average Yield 300 to 350 g/m2 / 350 g/plant

Odor and Flavors

Blackwater has a sweet aroma and pleasant smell of berry and grape. Its OG lineage becomes evident after crushing the herb when it emits a hashy scent with an herbal quality to it. Its smoke also has a subtle hint of pine and lemon. Compared to typical Indica strains, it is smoother on the throat and more so the lungs.


Blackwater, for sure, is not the strain one should go for as soon as waking up in the morning. Its effects though typically begin with a subtle euphoric cerebral high. Meanwhile, the dominant Indica psychoactive traits take a while before hitting the body.

TIP: Looking to buy Blackwater seeds? Check out this ILGM cannabis seed shop

Once it does, the strain ushers wave after wave of soothing sensation that melts away tension in the body. Its sedating effects calms muscles and puts users in deep relaxation feeling uplifted and contented. Used in moderation, it may not result in a couch-lock but could undoubtedly cause laziness especially as heaviness sets in the limbs.

Depending on dosage, it may also be quite intense. In this case, users are more likely to lose themselves in a spacey or foggy high. And, with an average of some 20% THC, it certainly has the potential to be devastating and well capable of knocking out people. For most though, the tranquility it induces can only lead to drowsiness and, eventually, an uninterrupted sleep.

Blackwater Effects

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Adverse Reactions

As can be expected, using Blackwater can cause the mouth and throat to feel dry, and that includes the eyes. Apart from that, it could also cause some people to have a slight headache. Not only that, but sudden movements may also lead to dizziness.

Although it is a mostly Indica strain, it has the potential to make a few people feel a bit paranoid. Often, this is a result of using more than what one can tolerate resulting in the psychedelic high becoming overbearing.

Blackwater Adverse Reactions

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Medical Use and Benefits

As a medical strain, Blackwater can offer a reprieve from the discomforts and pains caused by numerous health conditions. It is primarily for this reason that it received an award during the medical cup back in 2014.

Furthermore, by putting users in deep relaxation without much care, that is also tantamount to wiping out stress.

Its ability to soothe tired muscles makes it an excellent strain of end-of-day use. Most especially on taxing days, it helps the body calm down. Before its effects wear off, users do tend to feel sleepy with most falling asleep. As such, it is useful for insomniacs and recovering patients.

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Growing Blackwater

Blackwater is, by all means, not a tall plant. Typical of Indica species, it tends to be bushy.

TIP: Looking to buy Blackwater seeds? Check out this ILGM cannabis seed shop

On its appearance, the strain looks best when it shows purple hues. Growers can induce it by placing the plant in a colder area before flowering begins. Doing so activates a chemical process in which the coloration occurs.

Indoors, topping it early during the vegetation phase helps control its height as well as promote more outward growth. Growers do have to trim some leaves to ensure that not only do light penetrate the tight spaces, but also to have better air circulation. It is also best to use SOG with hydro for faster vegging and flowering. After some 7 to 9 weeks, each square meter can yield some 300 grams of buds or more.

For outdoor cultivation, a semi-humid to warm climate is suitable. Typically, the temperature hovers around 24 degrees Celsius. Harvest time usually falls in October with each plant producing some 350 grams of buds.

Have you grown or used Blackwater? If not, would you like to get your hands on this strain? Please leave a comment to let us know what you think. We want to hear from you.

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