How to Grow Black Demon OG
Black Demon OG is an 80% indica-dominant feminized strain, a cross of OG Kush and Black Domina. It carries a THC level of 17 to 20%, which sits in the medium range, and delivers a calming, happy and relaxed effect over a citrus, lemon and earthy flavor. This guide walks you through the whole grow, from germinating the seeds to the final cure.
It reaches a medium 1.5 m, flowers in 8 to 10 weeks, and finishes outdoors through October. Its heavy indica structure, forgiving nature and approachable potency make it a strong pick for first-time growers.
Recommended Strains
Black Demon OG
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THC | 17% - 20% (Medium) |
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Type | Feminized |
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Yield | Medium |
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Phenotype | 80% Indica / 20% Sativa |
Black Domina
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THC | 15% - 20% (Medium) |
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Type | Feminized |
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Yield | High |
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Phenotype | 95% Indica / 5% Sativa |
Black Demon OG at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this citrusy, earthy indica, taken straight from the strain’s grow data.
| Seed type | Feminized (photoperiod) |
|---|---|
| Genetics | OG Kush x Black Domina |
| Phenotype | 80% Indica / 20% Sativa |
| THC | 17–20% (medium) |
| Flowering time | 8–10 weeks |
| Outdoor harvest | October |
| Height | up to 4.92 ft (1.5 m) |
| Yield indoor | 1.31–1.47 oz/ft² |
| Yield outdoor | 17.64 oz/plant |
| Climate | Temperate |
| Flavors | Citrus, Earthy, Lemon |
| Effects | Calming, happy, relaxed |
| Difficulty | Beginner-friendly |
These are feminized seeds, so every plant flowers female and you skip culling males. Its heavy 80% indica lean places it firmly among the indica seeds, and its easy, forgiving nature makes it one of the best seeds for beginners. If you are still weighing options, the find your strain tool helps you match it against the rest of the catalog.
Promos & Deals
How to Germinate Black Demon OG Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Black Demon OG seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in two to five days.
Once the taproot is a few millimeters long, move each seed root-down about 1 cm deep into a small pot of light, airy medium. Keep it lightly moist rather than soaked, hold humidity around 65 to 70%, and give soft light while the first true leaves open. Its hybrid vigor makes for a strong, dependable seedling.
Starter tips
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Keep seedlings warm and humid, but never waterlogged.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Black Demon OG in the Vegetative Stage
As a photoperiod plant, you control the veg stage with the light schedule. Keep Black Demon OG on 18 hours of light a day for as long as you want it to grow, aim for day temperatures of 68 to 79°F, and hold humidity around 50 to 60%. It suits a temperate climate, so steady, moderate conditions work in its favor. As a heavy 80% indica it grows into a short, bushy, compact plant that stays around 1.5 m.
This is the stage to shape the plant. Because it bushes out, topping early and using low-stress training to spread the lower branches opens up the canopy, improves airflow, and lifts the yield. Give it room so light reaches the inner buds, and it rewards the effort with an even, productive spread.
Its dense, compact build and October finish make it a strong plant both indoors and out:
- Temperate outdoor plots: its October harvest fits regions with mild summers and a dry early autumn.
- Mediterranean-style gardens: steady warmth and good airflow let it stack its dense, resinous buds through flower.
- Indoor tents: at around 1.5 m with a compact build, it stays easy to manage under lights.
Flowering and Buds of Black Demon OG
Indoors, flip Black Demon OG to a 12/12 light cycle to trigger flowering, which runs 8 to 10 weeks. Outdoors it ripens through October. As a heavy indica it shows only a modest stretch after the flip, then packs on dense, dark, resin-coated, chunky buds.
Through bloom, drop humidity to 40 to 45% and keep air moving so the tight flowers do not trap moisture. The buds build a bright citrus and lemon aroma over an earthy, hashy base, the zesty OG Kush side meeting the dark Black Domina backbone.
At 17 to 20% THC it sits in the medium range, giving a calming, happy and relaxed effect, a comfortable, end-of-day body feel.
Common Problems and Pro Tips
Black Demon OG is beginner-friendly, but its dense buds and bright aroma point to a few things worth watching.
- Bud rot in dense colas: its tight, dark, resinous flowers can trap humidity, so keep a fan moving and humidity below 45% late in flower.
- Support the branches: the chunky, resinous colas can weigh the limbs down, so stake or net them as they fill out.
- Watch the smell: its bright citrus-lemon and earthy OG nose grows loud in flower, so run a carbon filter indoors if odor is a concern.
Expert tip: the compact, dense structure makes this an efficient grow. Keep an even canopy during a short veg, and dry and cure slowly to lift the bright citrus and lemon over its earthy, hashy base.
Aroma, Flavor and Effects
The nose is bright and grounded: fresh citrus and lemon up front over an earthy, hashy base. It is a layered, mouth-watering profile that blends zesty top notes with a dark, earthy depth, a nod to its OG Kush and Black Domina roots.
The flavor follows the nose, citrus and lemon with an earthy, hashy finish. On the effect side it is calming, happy and relaxed, a comfortable, end-of-day body feel. Because THC runs a moderate 17 to 20%, it stays rounded and approachable.
Dominant terpenes
Black Demon OG carries an unusually broad terpene profile. Myrcene lays down an earthy, musky base, Limonene brings a bright citrus-lemon lift that drives its zesty side, Caryophyllene adds a warm, peppery spice, Humulene a dry, woody note, Pinene a fresh pine sharpness, and Terpinolene a fresh, herbal accent. A deep supporting cast, including Citral, Terpineol, Nerolidol, Borneol, Camphene and Eugenol, rounds out its citrus, lemon and earthy character.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. Black Demon OG is a steady feeder, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.
What to Do With Your Trim: Extracts and Hash
Black Demon OG builds a solid coat of resin, so its trim is worth keeping rather than tossing. The sugar leaves you take off while manicuring hold trichomes and suit Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the citrus-lemon flavor intact, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.
Harvesting, Drying and Curing Black Demon OG
Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. Indoors this lands 8 to 10 weeks after the flip, and outdoors the plants are ready through October.
After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the citrus, lemon and earthy aromas that define this strain. When the small stems snap instead of bending, move the buds into jars.
Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the bright citrus and lemon really come together over its earthy base, and it is the step most first-time growers rush.
Frequently Asked Questions
Is Black Demon OG easy to grow for beginners?
Yes, Black Demon OG is beginner-friendly. Its hybrid vigor makes it forgiving, it reaches a manageable 1.5 m, and it finishes in 8 to 10 weeks. The main things to plan for are its dense, resinous buds, which need airflow, and its bright citrus-lemon and earthy smell, so run a carbon filter indoors if odor matters.
How long does Black Demon OG take to flower?
Black Demon OG flowers in 8 to 10 weeks once you switch it to a 12/12 light cycle indoors. Grown outdoors, it is ready through October. As a heavy indica it shows only a modest stretch after the flip, then packs on dense, dark, resin-coated buds over that bloom window.
How strong is Black Demon OG?
Black Demon OG has a THC level of 17 to 20%, which places it in the medium range. The effect is calming, happy and relaxed, a comfortable, end-of-day body feel. That moderate potency makes it a rounded, approachable strain for a wide range of growers and users.
How much does Black Demon OG yield?
Black Demon OG gives a medium indoor yield of around 1.31 to 1.47 oz/ft², while outdoors a plant reaches roughly 17.64 oz in good conditions. Light topping, an even canopy and strong light are what help it fill out its dense buds to their full potential.
What does Black Demon OG taste and smell like?
Black Demon OG leads with a bright citrus and lemon aroma over an earthy, hashy base. It blends zesty top notes from its OG Kush side with the dark, earthy depth of Black Domina. Both the aroma and flavor deepen as the buds cure slowly in the jar after harvest.
Is Black Demon OG an indica or a sativa?
Black Demon OG is strongly indica-dominant, at 80% indica and 20% sativa. Built from OG Kush and Black Domina, it has a short, bushy, dark, resin-heavy structure and a comfortable, relaxed body feel, with just a light lift from its small sativa side.
