Cosmic Bomb Autoflower brings Amsterdam's hard-hitting genetics to a fast-finishing package—crossing the legendary Bomb line with autoflowering genetics to deliver 16-20% THC in just 9-11 weeks. The fruity, skunky, and earthy profile unfolds with floral undertones, producing a relaxed, euphoric high that sparks creativity without the couch-lock. Built for moderate growers, this compact hybrid reaches 60-100cm and yields a solid 400-500g/m² indoors. Unlike standard autoflower seeds, Cosmic Bomb retains the aggressive potency Bomb Seeds is known for—check the full Bomb Seeds catalog for other offerings in this powerhouse line, including Baked Bomb for a similarly dominant strain. Fast, potent, and reliable.

Genetics & Lineage

Cosmic Bomb traces its genetics to Cosmic Bomb Autoflower (Bomb Seeds). This hybrid-dominant autoflower seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Bomb Seeds, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily relaxed and euphoric effects, making this strain ideal for evening use and unwinding after a long day. The body-centered stone builds gradually, easing tension and promoting deep physical relaxation. With THC levels reaching 20%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Cosmic Bomb delivers THC levels of 16-20%, placing it in the moderate-to-strong range that most regular consumers find comfortable. CBD content is minimal, so the psychoactive effects are front and center. The onset typically arrives within minutes with a balanced head-and-body experience that evolves over time.

Growing Cosmic Bomb

Cosmic Bomb is rated as moderate difficulty, making it suitable for growers with some experience. Basic knowledge of nutrient schedules, pH management, and environmental controls will help maximize results.

Indoor Growing: Expect a flowering time of 9-11 weeks with yields of 400-500g/m2. Plants typically reach 60-100cm indoors. Standard training techniques like topping and LST will help manage height and improve light penetration. Maintain temperatures between 68-80°F with relative humidity around 45-55% during flowering.

Outdoor Growing: This versatile strain performs well in both indoor and outdoor environments. Outdoor growers in warm climates can expect harvest from late September through October. Watch for humidity during late flowering to prevent bud rot, especially with dense flower formations.

Flavor, Aroma & Terpene Profile

Cosmic Bomb features a fruity, skunky, earthy, floral terpene profile that develops complexity throughout the flowering cycle. Sweet berry and grape notes dominate the inhale, with a sugary exhale that lingers on the palate. The aroma intensifies significantly during the final 2-3 weeks of flowering — carbon filtration is recommended for indoor grows requiring discretion.

Medical Benefits

While individual experiences vary, Cosmic Bomb is commonly reported to help with stress relief, chronic pain, insomnia, and muscle tension. The deeply relaxing effects make it a popular choice among medical users seeking nighttime relief. As with any cannabis strain, start with a low dose and increase gradually. Consult a healthcare professional before using cannabis for medical purposes.

Who Should Grow Cosmic Bomb?

This strain is ideal for intermediate growers ready to push their skills and be rewarded with superior results. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy Cosmic Bomb from Seennabis?

When you purchase Cosmic Bomb through Seennabis, you are buying directly from Bomb Seeds — Dutch breeder behind the iconic 'Bomb' line — THC Bomb, Cherry Bomb, Hash Bomb, Atomic. Every order includes verified genetics, discreet shipping, and responsive seller support. Bomb Seeds has completed over 67,800 sales with a 4.7-star rating from 4,920 verified reviews.