Quick read: 15-19% THC, 60-120cm mature height, 8-10 weeks total bloom. Genetics: Granddaddy Purple Autoflower Marijuana Seeds >> ILGM (ILGM genetics). Difficulty: easy.

ILGM lists this at $45.36 — above the median of $30.41 across 10 listings. Pack options: 3-seed at $45.36, 5-seed at $75.60, plus larger sizes.

Smell-first: crack a cured bud and the room fills with grape and dried lavender before anything earthy follows. That's the signature of this autoflowering GDP cut, and it holds up from seed to harvest without much fuss. Running 8–10 weeks total from sprout, it wraps up fast enough to squeeze multiple runs into a single season outdoors or keep a perpetual cycle moving indoors. Yields land in the 450–600 g/m² range under decent light, which is solid for an auto that asks very little — no training required, though a light LST pass won't hurt. THC sits at 15–19%, leaning into a heavy body effect that most people describe as sedating rather than functional. Growers rate it easy, and both indoor and outdoor environments work fine.

Best suited for beginners who want a relaxed first grow and a nighttime-use harvest without wrestling a photoperiod schedule.

Genetics & Lineage

Granddaddy Purple Marijuana >> ILGM traces its genetics to Granddaddy Purple Autoflower Marijuana Seeds >> ILGM (ILGM genetics). This indica-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 ILGM, 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 19%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Granddaddy Purple Marijuana >> ILGM delivers THC levels of 15-19%, 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 5-10 minutes, settling into the body as a warm, heavy relaxation.

Growing Granddaddy Purple Marijuana >> ILGM

Granddaddy Purple Marijuana >> ILGM 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 8-10 weeks total with yields of 450-600g/m2. Plants typically reach 60-120cm indoors. This strain responds exceptionally well to SCROG (Screen of Green) and LST (Low Stress Training), which can boost yields significantly. 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 the dense, heavy buds this strain produces.

Flavor, Aroma & Terpene Profile

Granddaddy Purple Marijuana >> ILGM features a floral, earthy terpene profile that develops complexity throughout the flowering cycle. The complex aromatic bouquet develops fully after proper curing. 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, Granddaddy Purple Marijuana >> ILGM 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 Granddaddy Purple Marijuana >> ILGM?

This strain is ideal for beginner growers looking for a reliable, low-maintenance plant that delivers consistent results without advanced techniques. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy Granddaddy Purple Marijuana >> ILGM from Seennabis?

When you purchase Granddaddy Purple Marijuana >> ILGM through Seennabis, you are buying directly from ILGM — I Love Growing Marijuana (ILGM) — the #1 beginner-friendly seed bank since 2012. Every order includes verified genetics, discreet shipping, and responsive seller support. ILGM has completed over 223 sales.