Royal Jack Autoflower Seeds
Jack Herer genetics done in 63–70 days
$0.00 – $143.654 pack sizes — choose at ILGM
Guaranteed germination · Free US shipping over $50 · Discreet packaging
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Our take
Royal Jack Autoflower brings the classic Jack Herer profile — earthy pine, a spicy edge, and a clear-headed sativa feel — into an autoflowering format that suits beginners. With 16% THC and a full seed-to-harvest cycle of just 63–70 days, it's a practical choice for anyone who wants a rewarding first grow without a steep learning curve.
Grow specs
Specs are ILGM's published figures for this product; catalog and pricing last verified August 2026. Our write-up is our own — see how we make money.
Growing notes
Rated beginner-friendly, Royal Jack Auto handles indoor setups and outdoor continental climates equally well. Its short stature keeps things manageable in tents or small garden spaces, and the dense bud structure rewards growers who maintain good airflow. Indoors, expect flowering in 56–70 days. Outdoors, plants wrap up before the coldest autumn weeks, giving you a comfortable harvest window.
New to growing? Start with the complete guide, plan your gear with tent setups, and diagnose problems with troubleshoot.
Want variety instead?
Mix packs bundle three proven strains (30 seeds) at up to 50% off buying separately — the best value in the catalog.
Browse mix packs
