Blackwater
Also known as: Blackwater OG, Blackwater Kush
Mendo Purps meets SFV OG in a grape-scented indica built for deep sleep.
Experience scores
0–100 profile derived from cannabinoids, effects, and terpenes.
About Blackwater
Blackwater is a knockout indica from The Cali Connection, crossing the grape-rich Mendo Purps with the potent SFV OG Kush. The flowers often display deep purple hues and a sweet, earthy grape aroma. Its effects are strongly sedating, making it a go-to for pain, insomnia, and late-night stress relief.
Effects
Relative prominence based on the strain profile.
Possible negatives
Dominant Terpenes
Sensory Profile
Taste
Aroma
Strain scores
★ 4.6 from 6,176 community ratings
Lineage & profile
Parents: Mendo Purps × SFV OG Kush
Awards: High Times Cannabis Cup 2014 Los Angeles
Best reserved for night or before-sleep use. The heavy physical sedation locks the body and helps transition into natural REM cycles.
Medical & mood
Medical marijuana patients frequently turn to Blackwater to help manage symptoms associated with pain, insomnia, stress. The strain's relaxed and sleepy properties are reported to help ease tension, reduce physical discomfort, and lift mood without causing excessive grogginess.
Evidence level: high — Backed by extensive clinical research surveys confirming cannabinoids alleviate persistent nerve discomfort.
Smoking timeline
- 0–5 min
Immediate head calm. A warm physical wave washing down the neck and shoulders, releasing joint tension.
- 10–30 min
Physical weight sets in. You will feel comfortable sinking into cushions, with stress melting away.
- Peak
Deep sedation peak. Couch-lock occurs alongside strong appetite stimulation. Best time to put on a movie.
- Afterglow
Mellow wind-down. Cerebral buzz settles into a peaceful, clear-headed calm. No hard crash.
Typical duration: 2.5 to 3.5 hours
Mental: Calm, slow, peaceful, free from stress thoughts.
Body: Heavy limbs, floating sensation, pain relief, hungry.
Who will love it
Enthusiasts looking for deep evening comfort, chronic pain relief, and help with sleeplessness.
Who should avoid it
Avoid this strain if you need to remain active, drive, or focus on detailed administrative tasks, as it induces muscle heaviness.
Pro secrets
The secret to unlocking the full potential of Blackwater lies in temperature control. To preserve its delicate Myrcene terpenes, vaporize at 334°F (168°C) rather than combusting. This triggers the entourage effect, blending its 21% THC with secondary cannabinoids. Highly sedating, this strain is best reserved for late nights or as a bedtime wind-down. Keep snacks nearby, as it is known to stimulate appetite. Beginners should start with a single inhalation due to its fast-acting onset, while seasoned users can appreciate its deep, multi-layered terpene depth.
Browse vaporizers & gear →Expert Note
Cooler nighttime temperatures can bring out striking purple coloration late in flower.
Hidden Truth
Blackwater took first place at the 2014 High Times Cannabis Cup in Los Angeles.
Related Strains
Alien Bubba
Alien Bubba is an indica-dominant hybrid that combines Alien Kush's otherworldly resin production with Bubba Kush's heavy relaxation. The high is calming and sedative, often ending in restful sleep. Its flavor is classic kush: earthy pine with a subtle sweetness.
Skywalker
Skywalker is an indica-dominant hybrid bred by Dutch Passion from Blueberry and Mazar. It offers a sweet berry aroma with earthy pine undertones and a reliable, relaxing high that eases users into sleep. It is a long-standing favorite for both medical and recreational evening use.
Black Diamond
Black Diamond is a 90% indica jewel bred from Blackberry and Diamond OG. Its tall, productive plants yield dense purple-hued buds that smell of sweet grapes and earth. The high is deeply soothing and long-lasting, making it a favorite for winding down and easing into rest.
Sensi Star
Sensi Star is a cup-winning Afghani-dominant indica from Paradise Seeds. Short, stout plants produce rock-hard, resin-glowing colas with a piney, citrus-tinged aroma. The effect is a powerful body stone anchored by a subtle cerebral lift, ideal for quiet nights and physical relief.
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