Quick read: 22-27% THC, 80-150 cm mature height, 8-9 weeks bloom. Genetics: Alien Cookies x Hybrid Male. Difficulty: moderate.

Lineage: Alien Cookies crossed with a selected hybrid male — that pairing is what put MAC #1 on most serious growers' radars a few years back, and the results hold up. Indoors, expect 450–550 g/m² after an 8–9 week flower cycle, with lab panels typically reading 22–27% THC on well-dialed runs. The terpene profile leans earthy with a clean citrus lift that comes through more on the exhale than the nose — subtle, not loud. These are feminized seeds, so you're not managing male culls, but the plants do ask for some attention: topping and consistent environmental control keep the structure manageable and protect those dense colas. She'll grow indoors or out, though indoor growers have more control over the outcome given the moderate skill floor.

Best suited to growers who've got a few runs under their belt and want a high-THC cultivar with a lineage worth tracking.

Genetics & Lineage

MAC #1 traces its genetics to Alien Cookies x Hybrid Male. This indica-dominant feminized 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 relaxed and sleepy 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 27%, this is a potent strain recommended for experienced users — newcomers should start low and go slow.

THC Level & Potency

MAC #1 delivers THC levels of 22-27%, placing it in the high-potency category alongside powerhouses like Gorilla Glue and Girl Scout Cookies. CBD content is minimal, so the psychoactive effects are front and center. The onset typically arrives within 5-10 minutes, settling into the body as a warm, heavy relaxation.

Growing MAC #1

MAC #1 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 8-9 weeks with yields of 450-550 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 40-50% 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

MAC #1 features a earthy, citrus terpene profile that develops complexity throughout the flowering cycle. Bright lemon and orange zest punch through on the inhale, with a tangy, refreshing finish. 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, MAC #1 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 MAC #1?

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 MAC #1 from Seennabis?

When you purchase MAC #1 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.

MAC #1 vs North Atlantic Seed Company

MAC #1 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 premium potency with earthy and citrus 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 MAC #1” or “MAC #1 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 MAC #1 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.