QCS Seeds – Quebec Cannabis Seeds

QCS Seeds (Quebec Cannabis Seeds)

QCS Seeds is a cannabis seed breeder known for a catalog spanning classic strains alongside newer hybrids, with a breeding focus on stable, vigorous genetics — predictable flowering times, balanced cannabinoid levels, and consistent growth patterns from plant to plant. Their lineup includes both high-THC strains and more balanced-ratio options, across feminized, autoflower, and CBD-focused seed types.

Breeding Approach

QCS selects parent plants for genetic stability and resilience against common growing challenges like mold, pests, and temperature swings, aiming for cultivars that stay manageable for growers of varying experience levels. Strains in the catalog span a range of terpene profiles, from sweet and fruity to earthy and spicy.

Popular QCS Strains

• OG Kush — the Chemdawg × Hindu Kush classic, with citrus-pine-fuel flavour and an uplifting-to-relaxed effect
• Runtz — Zkittlez × Gelato, candy-sweet and potent at around 27% THC
• Fruity OG Kush — an OG Kush descendant with a distinct grapefruit character
• Crush Kush — a Kush-leaning QCS favourite
• Critical Mass Autoflower — a forgiving, fast-finishing autoflower

Buying QCS Seeds in Canada

Every QCS pack we sell ships discreetly across Canada (see our shipping page) and is covered by our 100% seed guarantee. Home cultivation rules differ by province — most allow up to four plants per household, while Quebec does not permit home growing. Our guide to buying cannabis seeds in Canada covers the main differences.

Browse More Seeds

• All Seeds — the full catalog
• Quebec Cannabis Seeds — our Quebec line, including Quebec Blue and Quebec Gold 2.0
• Autoflower Seeds — faster, age-triggered flowering
• Mix Packs — sample multiple genetics in one order

Legal Disclaimer

Cannabis laws vary by jurisdiction. It is the buyer's responsibility to know and follow all local, provincial/state, and federal laws. These products are intended for adult customers (18+ or as required by law) where permitted. We do not encourage or promote any illegal activity.

Frequently Asked Questions

Does Montreal Cannabis Seeds breed Quebec Cannabis Seeds strains? No. We are a seed bank, not a breeder. Quebec Cannabis Seeds is the breeder, and every Quebec Cannabis Seeds strain page names it.

Where do the THC, flowering and yield figures for Quebec Cannabis Seeds strains come from? From Quebec Cannabis Seeds’ own published data at quebeccannabisseeds.com. When Quebec Cannabis Seeds has not published a figure, the page says “Not specified by the breeder” instead of an estimate.

Is a Quebec Cannabis Seeds strain the same as another breeder’s strain with the same name? No. Strains that share a name, such as White Widow or Cheese, are different selections from different breeders, and their figures should not be mixed.

Are Quebec Cannabis Seeds seeds covered by your germination guarantee? Yes. Our germination guarantee covers 80% germination within 90 days of purchase when our instructions are followed. We replace seeds that fall short.

Do you ship Quebec Cannabis Seeds seeds across Canada? Yes. Orders ship from within Canada in plain, unmarked packaging.