Indica
Blackwater Strain
Also known as: Blackwater Cannabis, Black Water, Blackwater OG
THC20% - 24%
CBD0% - 1%
Flowering9 weeks
Top terpenes: Myrcene, Caryophyllene, Limonene
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Quick answer
Blackwater is a heavy indica most often credited as Mendo Purps x SFV OG Kush (some menus list Blackberry x Diamond OG), typically testing 20% - 24% THC. Effects: Relaxed, Sleepy, Euphoric, Hungry.
Blackwater is the dark, grape-scented nightcap its name suggests: an indica-dominant hybrid with dark purple buds, a concord grape aroma and a soothing, slow-building body high. The lineage needs an honest note - the most common credit is Mendo Purps crossed with San Fernando Valley OG Kush, while a number of menus (ours included) list Blackberry x Diamond OG; both accounts describe the same dark, grape-forward, sleepy flower, and with legacy cuts this tangled, the jar matters more than the paperwork. I hand it firmly to evening and night smokers: insomnia, pain and stress users report the best results. I do not hand it to daytime anything - the sedation builds quietly and then takes over. The honest downside: it is a one-note nightcap by design; flavour chasers who want a bright daytime profile should look elsewhere, because Blackwater is unapologetically a lights-out strain.
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Strain facts – the numbers behind the high
THC Range
20% - 24%
Individual batches vary; craft lots often test higher.
CBD Range
0% - 1%
Trace amounts only. This is a THC-driven profile.
Type
Indica
Ratio drives the shape of the high.
Top Terpenes
Myrcene · Caryophyllene · Limonene
The terpene leaders behind the flavour and feel.
Flowering Time
9 weeks
Grower reference for cultivar finish time.
Where this sits in the indica laneMost indicas test 15% to 22% THC
Blackwater Strain: 20% - 24% THC. Right in the sweet spot of the indica lane.
The story of Blackwater
Blackwater is a Mendocino story. The most common lineage credit - Mendo Purps crossed with San Fernando Valley OG Kush - pairs the famous purple grape sweetness of Mendocino with the heavyweight OG structure of the Valley, and the result is exactly that: dark purple flowers, concord grape aroma, OG-grade sedation. A parallel account lists Blackberry x Diamond OG, and with legacy California cuts this tangled, both trees describe the same style of flower. What is not disputed is the effect: Blackwater built its reputation as a nightcap, and the name - dark water, deep sleep - is a fair warning label.
Terpene breakdown
Myrcene leads, carrying both the grape-berry sweetness and the heavy body sedation. Caryophyllene adds a peppery, earthy spice that keeps the fruit from going flat, and limonene contributes a quiet citrus lift on the first exhale. The profile is dessert-dark: grape, berry, earth, spice.
Growing Blackwater
A 9 week finish with large, dense, dark purple buds under a heavy trichome blanket. The purple comes from cool-finish anthocyanins and the Mendo side of the tree; expect broad indica structure, moderate stretch and a strong grape-and-earth aroma in flower. Watch humidity late - the dense purple flowers are moisture traps.
How to consume Blackwater
An hour or two before bed. The mellow start is real - gentle euphoria, a warm body - and the sedation builds quietly underneath until it owns the evening. Pain, stress and insomnia users report the most benefit; the munchies arrive mid-arc. Save it for when the day's work is genuinely done.
Blackwater vs similar strains
Against
Granddaddy Purple, the other famous purple grape indica, Blackwater is less sweet and more OG-spicy. Against
Blackwater OG, its SFV-leaning cousin, the difference is emphasis rather than kind.
Indica dominant hybrids cover the wider lane.
Frequently asked questions
Storing Blackwater
Airtight glass, cool dark cupboard, 58 to 62 percent humidity pack. Dark purple buds fade fast in light, so keep the jar out of the sun or the deep colour goes brownish. The grape top note holds well; the sedation - the part you bought it for - fades first if the jar gets opened constantly.
Buying Blackwater in Canada
- Where to buy: right here - when in stock, the products above ship from our Canadian warehouse.
- Shipping: Canada Post Xpresspost with tracking, discreet packaging. Free shipping on orders over $149.
- Legality: Blackwater is legal to buy online in Canada from licensed retailers for adults 18+ (19+ in some provinces).
- Sold out? Check the close matches above - all in stock right now.
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