From the lab panel — 15-20% THC, <1% CBD. From Canadian grower reports — 400-500 g/m² yield, citrus/fruity dominant in cured flower. easy grow.

Lineage: Green Crack × Ruderalis, and the cross did exactly what it was supposed to — it kept the sharp citrus snap of the original while shaving the grow cycle down to 8–9 weeks from seed. That timeline makes it a practical pick for Canadian growers who want to squeeze two outdoor runs into a short season, or anyone running a perpetual indoor setup who can't afford a 12-week wait.

Yields land in the 400–500 g/m² range indoors under decent light, and at 15–20% THC the final product has real presence without veering into territory that overwhelms casual users. The flavor leans hard into bright citrus and fruit — less candy, more fresh peel. Difficulty is rated easy, and that checks out: autos this forgiving rarely need much coaxing to hit those numbers.

A solid first autoflower for newer growers who want a quick harvest without sacrificing potency.

Genetics & Lineage

Green Crack Auto traces its genetics to Green Crack x Ruderalis. This sativa-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 North Atlantic Seed Co., each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily energetic and creative effects, making this strain perfect for daytime use, creative projects, and staying productive. The cerebral lift arrives quickly, sharpening focus and inspiring motivation. With THC levels reaching 20%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Green Crack Auto delivers THC levels of 15-20%, 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, starting as a cerebral buzz that gradually expands.

Growing Green Crack Auto

Green Crack Auto is rated as easy difficulty, making it an excellent choice for first-time growers. The plants are resilient, forgiving of common mistakes like overwatering or inconsistent feeding schedules.

Indoor Growing: Expect a flowering time of 8-9 weeks from seed with yields of 400-500 g/m². Plants typically reach 80-150 cm 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

Green Crack Auto features a citrus, fruity 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, Green Crack Auto is commonly reported to help with depression, fatigue, lack of motivation, and ADHD symptoms. The uplifting, focusing effects make it popular among medical users seeking daytime functionality. 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 Green Crack Auto?

This strain is ideal for beginner growers looking for a reliable, low-maintenance plant that delivers consistent results without advanced techniques. If you need a daytime boost for creativity and sustained focus, look no further.

Why Buy Green Crack Auto from Seennabis?

When you purchase Green Crack Auto through Seennabis, you are buying directly from North Atlantic Seed Co. — America's most trusted seed bank. Every order includes verified genetics, discreet shipping, and responsive seller support. North Atlantic Seed Co. has completed over 147 sales.

Green Crack Auto vs North Atlantic Seed Company

Green Crack Auto is one of the most popular strains available through North Atlantic Seed Company (NASC), America's #1 voted seed shop for 2024 and 2025. Based in Maine, NASC has built an exceptional reputation for lightning-fast US shipping, generous bonus seed programs, and a curated catalog of 2,800+ strains from top breeders worldwide. This strain delivers reliable quality with citrus and fruity flavors that American growers trust.

While NASC offers this strain directly through northatlanticseed.com, Seennabis provides a marketplace experience with deeper content and broader comparison tools. If you've been searching for “NASC Green Crack Auto” or “Green Crack Auto North Atlantic Seed Company,” you've found the most comprehensive breakdown available — with growing guides, effect profiles, and cross-breeder comparisons that NASC product pages don't provide.

Why Buy NASC Seeds on Seennabis?

North Atlantic Seed Company is a top-tier US marketplace — and Seennabis adds the full picture:

• Cross-marketplace comparison: Compare Green Crack Auto from NASC against the same strain from other seed banks like Seedsman, ILGM, and Barney's Farm — all on one page.
• Deeper grow intelligence: Detailed cultivation guides, grower-match tools, and effect breakdowns that go beyond NASC's standard product listings.
• Global selection: Access strains from European breeders like Dutch Passion, Sensi Seeds, and Zamnesia alongside US favorites — 1,300+ strains from 15+ seed banks.
• Verified community: Real grower reports with yield data and cultivation tips from the Seennabis community.