Chem '91 Seeds
Classic diesel lineage, dense buds, 21% THC
$0.00 – $143.654 pack sizes — choose at ILGM
Guaranteed germination · Free US shipping over $50 · Discreet packaging
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Our take
Chem '91 is a feminized balanced hybrid tracing its roots to Thai Landrace genetics through the Chemdog family — one of the more storied lineages in American cannabis history. At 21% THC, it delivers a sociable, creative experience with a sharp diesel-and-lemon aroma that's immediately recognizable. It's best suited to growers who have a few grows under their belt.
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
Chem '91 suits indoor and outdoor gardens in most US climates, provided outdoor plants finish before hard frost — mid-October is the target. Plants grow tall, so plan for training (topping or LST) to manage height and improve light penetration. Flowering wraps up in eight to nine weeks indoors. Intermediate growers who are comfortable with basic canopy management will get the most from its yield potential.
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.
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