Double Black is a pure indica cannabis strain bred from Black Domina ’98 crossed with itself, known for compact, resin-covered plants and heavy, sedating effects. G13 Labs released it as a feminized version of the classic Black Domina. THC is listed at about 18% to 20%, and users describe a slow-building, hazy high that ends in deep relaxation and sleep.
Double Black Strain at a Glance
| Type | Pure indica |
|---|---|
| Lineage | Black Domina ’98 × Black Domina ’98 |
| Breeder / origin | G13 Labs |
| THC | 18–20% (typical lab range) |
| CBD | Low |
| Aroma and flavor | sour citrus, woody pepper, earthy, sweet resin, sour lemon, pine, earthy wood |
| Reported effects | relaxed, sleepy, hungry, euphoric |
| Best for | nighttime, sleep, growers who want a fast, compact indica |
| Flowering time | About 50–55 days (8–9 weeks) |
Where Double Black Comes From
Double Black is G13 Labs’ feminized take on Black Domina ’98, a well-known Afghan-heavy indica. SeedFinder, AllBud and Zamnesia’s G13 Labs listing all give the cross as Black Domina ’98 with Black Domina ’98. In its own description, carried on SeedFinder, G13 Labs says the strain keeps the look, smell and taste that made Black Domina famous, calls it about 90% stable and suited to both new and experienced growers, and notes its value as a mother plant.
SeedFinder’s genealogy traces Black Domina ’98 to Afghani, Canadian Ortega, Northern Lights and Hash Plant, all classic indica stock. SeedFinder also lists Maltezerz from G13 Labs as a cross that uses Double Black as a parent.
Double Black Effects: What It Feels Like
AllBud describes a slow, creeping build that suddenly takes hold, leaving you euphoric but hazy and unfocused, followed by strong hunger and then a relaxing, sedative turn that can put you to sleep if you overdo it. It calls the strain heavy enough to flatten even experienced users. Zamnesia’s listing simply tags the effect as relaxing.
Leafly’s handful of reviews is less consistent, with some reviewers reporting energetic and focused effects, so individual batches may vary. As a pure indica built for body effect, it is best kept for evenings and nights at home.
Double Black Terpenes, Aroma and Flavor
AllBud describes sour citrus and woody pepper when the buds are broken up, with a sour lemon taste, rich pine and sweet, earthy wood. G13 Labs says the plants are covered in Afghan resin with a sweet, intoxicating aroma, and Zamnesia lists mint and mango. Leafly reviewers mostly tag it earthy. The range suggests a resin-heavy hash-plant character with citrus or fruit on top, depending on the grow.
No source we checked publishes a terpene profile for Double Black.
Side Effects and How to Use Double Black
Leafly reviewers most often mention dry mouth. The main thing to watch is sedation: AllBud warns it can knock even experienced users flat, so keep the dose small and save it for when you can rest.
If you are new to Double Black, start with one small inhalation or 2.5 mg in an edible and wait before taking more; see our dosing guide.
Do People Use Double Black for Medical Reasons?
AllBud says people often choose Double Black for insomnia, appetite loss, cramps, muscle spasms, Crohn’s disease and chronic pain, and Leafly reviewers mention low mood. These are user reports, not clinical findings.
These are user reports, not clinical findings. For what research actually supports, see our cannabis health and research section, and talk to your doctor before using cannabis for a health condition.
Growing Double Black
- Difficulty: Moderate
- Flowering: About 50–55 days (8–9 weeks)
- Yield: Up to 500 g/m² indoors; up to 1,000 g per plant outdoors
- Height: Short, around 140 cm
- Environment: Indoor and outdoor
Zamnesia’s G13 Labs listing rates the grow as moderate, with flowering of about 55 days (8 to 9 weeks), short plants around 140 cm, and yields up to 500 g/m² indoors or 1,000 g per plant outdoors. SeedFinder lists about 50 days. G13 Labs says the plants are compact, fast, very stable and good as mother plants for clones, and the seeds come feminized only. The quick finish is a real advantage in the Pacific Northwest, where an early harvest dodges October rain, but dense, resinous indica buds still need airflow to prevent mold.
Home-grow rules depend on the state: adults can grow at home in states such as California (six plants per residence), Michigan (12 per residence) and Oregon (four per household), while Washington and Illinois allow home growing only for registered medical patients. Check your state in our cannabis laws by state guide before you plant anything.
Strains Like Double Black
- Northern Lights: part of Black Domina’s ancestry
- Afghani: the Afghan indica at the root of the line
- Hindu Kush: another classic, resin-heavy pure indica
- Afghan Kush: a similar sedating, hashy indica
- Bubba Kush: a heavy nighttime indica
Browse more indica strains, the full strain directory, or our guide to cannabis strains.
More Indica Strains to Explore
Double Burger · Dulce De Uva · Electric Black Mamba · Dosi Punch · Dolato · Do-Si-Dos · All indica strains
Where to Buy Double Black
Dispensary menus change every week, and Double Black may be sold under its own name, as a cross or as a pre-roll or vape. The fastest way to find it is to check store menus online before you go. In Portland, browse Portland dispensaries and check the menus at stores like Greene Street Holdings Maine and Cannabis Cured Portland. In Grand Rapids, browse Grand Rapids dispensaries and check the menus at stores like Exclusive Grand Rapids and JARS Cannabis. You can also browse licensed dispensaries in every state we cover. Adults 21 and older can buy with a valid photo ID; see cannabis laws by state for purchase limits.
Double Black FAQ
Is Double Black indica or sativa?
It is a pure indica. AllBud and Zamnesia both list it as 100% indica.
What is Double Black a cross of?
It is Black Domina ’98 crossed with itself, a feminized version of Black Domina made by G13 Labs.
Who bred Double Black?
G13 Labs.
How strong is Double Black?
THC is listed at about 18% to 20%, and AllBud describes the effect as heavy and sedating.
Is Double Black good for sleep?
Many users say so. AllBud lists insomnia among the most common reasons people choose it, and its effects lean sleepy.
How long does Double Black take to flower?
About 50 to 55 days, or 8 to 9 weeks, according to SeedFinder and Zamnesia.
For adults 21+ in legal states. Strain information reflects breeder descriptions, lab data and user reports; effects vary by person and batch. Not medical advice.
