THC Bomb Auto: The Fast-Hitting Firecracker
If you want a strain that grows quick, smokes smooth, and delivers solid therapeutic benefits, THC Bomb Auto is the real deal. This autoflower from Bomb Seeds is a compact powerhouse bred from the original THC Bomb genetics with the addition of ruderalis.
Blessed with a THC level of between 18 and 20 percent, this strain walks the line between bold and manageable. It delivers a strong experience without overwhelming casual users. Its CBD content stays low, making this more recreational than medical for most users.
THC Bomb Auto carries a 65 percent Indica and 35 percent Sativa profile. That means you get deep body relaxation without losing your mental edge. It works well for evenings or slow-paced afternoons where chill vibes matter.
This plant grows thick and dense flowers that sparkle with a generous crystal coverage. The round shaped buds are sticky and often show off orange hairs with the occasional hint of purple in cooler climates. Well, even small plants look impressive once flowering kicks in.
Legend
Euphoric & Relaxing | |
THC: 20% | CBD: 0% | |
THC Bomb x Auto Bomb | |
65% Indica – 35% Sativa | |
80-100 cm | |
400-550 g/m² | |
10-11 weeks | |
90-130 cm | |
70-150 g/plant | |
7-9 weeks |
Effects and Flavor Profile
THC Bomb Autoflower’s scent profile opens with earthy tones and sharp herbal spice. And once you start breaking the buds apart, you get deeper notes of warm wood and faint sweetness that leave a strong first impression. It fills the room quickly and evolves as it cures, mellowing slightly but staying pungent.
Smoking or vaping this flower delivers a mix of herbal and skunky flavor with some citrus bite. You will certainly fall in love with the smooth inhale with a peppery kick on the tongue. On the exhale, it leaves a rich aftertaste with floral and zesty edges.
65% Indica – 35% Sativa | ||
Relaxation, Euphoria, Energetic | ||
Myrcene, Caryophyllene, Limonene | ||
Skunky, Earthy, Spicy |
The Lift-Off
Effects come on fast, usually within a few minutes of your first hit. You’ll feel a rush deep inside your head that turns out to be a mental lift that clears any mind fog. Your mood improves in an instant with ideas beginning to stream in.
This stage promotes focus and creativity without jittery energy. Best settings include chill hangs, hobbies, or low-key social time.
The Peak
THC Bomb Autoflower won’t knock you flat, but it won’t let you sit still either. After 30 minutes or so, the body high kicks in with more weight. You will start to feel your limbs loosen as tension drops, and the world gets a little quieter.
The cerebral buzz eases into a calm float while your body sinks comfortably. You’ll stay grounded without feeling groggy for a good two hours before tapering.
The Fade
The comedown is smooth and gradual. You’ll notice a shift as energy fades and muscles fully relax. It’s the perfect time for music, movies, or a bath.
You’ll likely feel mellow and ready to coast through the rest of your day. Think of no fog, no hangover, but just a calm finish for clearing the mind, preferably before bed.





June 3, 2025
THC Auto Bomb was a great strain to grow. Did very well outside and was able to get all my seeds planted and cultivated.
Dennis R
How to Grow THC Bomb Auto
THC Bomb Autoflower knows how to grow fast yet offer rewarding yields. Knowing how to keep up with the speed is important in securing the harvests.
Setting Up Your Indoor Space for THC Bomb Auto Success
Before anything else, a good setup lays the foundation for your grow. THC Bomb Auto prefers a clean, simple space that keeps things consistent. It grows fast, so having the right conditions from day one makes a big difference.
Here’s how to dial in your grow space:
- Give it space: Around two square feet per plant helps airflow and keeps things tidy.
- Pick strong lighting: A single 600-watt HPS can do the job, but a 300-watt LED per plant gives you more control. Line your walls with reflective material to bounce light back into every corner.
- Use steady airflow: One oscillating fan and an exhaust fan should be enough to move air around.
- Choosing your medium: Coco and light organic soil blends both give fast roots and easy feeding. If you have the skills, you can opt for hydroponics for an even more rewarding growing adventure.
- Stick with fabric pots: Three to five gallons is all it needs to root well and stay upright. This size allows root zone development without needing transplanting later which often disrupts the fast cycles.
- Watch the humidity: Aim for a more humid environment in the early days into veg to help those young leaves expand fast. As flowering kicks in, reduce moisture in the air to keep mold far away.
- Keep temps stable: Shoot for the mid-twenties during lights-on for happy growth. Let the nights cool slightly—your plants will thank you with deeper colors and tighter buds.
Nutrient Management for Each Stage of THC Bomb Auto’s Growth
In week one, keep things simple. If you’re growing in soil, the seed has everything it needs for a few days. Coco growers may want to add a drop of root booster and a touch of calcium right away.
From week two onward, growth takes off. Nitrogen becomes important now, and the plant responds well to steady, light feeding. If your lights are strong, keep an eye on magnesium levels and add support if leaves begin to curl or spot.
By week five, flowering usually begins. Pull back on nitrogen and bring in phosphorus and potassium to build thick buds. Some growers also add bloom boosters in mid-flower, but keep things light to avoid burn.
Using the SCROG Method to Maximize THC Bomb Auto Yield
This strain fits well under a SCROG net because it grows evenly and fills space quickly. It doesn’t stretch too much, which helps when you’re trying to keep everything at one height. The structure also makes it easy to train early without stress.
Start guiding the main stem sideways under the screen once it hits the third week. As new shoots appear, tuck them gently under the mesh to keep the canopy flat. You can remove a few lower leaves to help air move freely around the base.
By the sixth week, your net should be full. The buds will rise evenly if you keep up with daily tucks. Most growers who use this method report a big jump in yield and better light spread across the plant.
CLIMATE INTENDED
Very Hot | Hot | Moderate | Cold | Very Cold |
Growing Characteristics
THC Bomb Auto cannabis seeds is loved by most cannabis growers for its forgiving nature. It holds up pretty well against pests, temperature swings, and inconsistent watering. This is what makes it great for new growers or anyone who wants low-stress cultivation.
In addition, THC Bomb Autoflower cannabis seeds adapt well to different environments. They thrive in moderate to warm regions but can also handle cooler climates. Indoors or outdoors, it keeps performing with consistency.
Plant Size and Shape
Expect THC Bomb Autoflower plants to stay short, around 65 to 95 centimetres indoors. Outside, you may see them stretch slightly taller if given space. As for the structure, this strain takes on a bushy one with strong lateral growth and dense flower sites.
From this plant size and shape, THC Bomb Autoflower can be a good choice for tight grow tents or stealth outdoor setups. You can manage its size without constant training, as it allows better airflow, which helps with bud health.
Flowering Time
From seed to harvest, you’re looking at 65 to 70 days total. With well optimized growing conditions, some phenos finish closer to 60 under optimal care.
Typically, you should see flowering start automatically around week three or four. Outdoor growers can plan for two to three cycles in warmer months.
Yield
Indoor yields can reach up to 550 grams per square meter. Outdoors, you may see up to 150 grams per plant under good sun.

Pro Grow Tip : This is a perfect strain for beginner growers. To hit a max yield, use an indoor grow room with a little higher in temperature and humidity.
Origin and Breeder Story
THC Bomb Auto comes from Bomb Seeds, a breeder known for power-packed hybrids. It’s a cross between their original THC Bomb and a selected ruderalis to bring out autoflower traits.
This strain has gained popularity for the amount of firepower in its high and its fast finish in the grow room. And Yes, the name isn’t just clever because it reflects what this plant brings to the table.
Ally M –
THC Bomb was one of the best strains I have grown. High quality seeds and was able to get a good yield.