Français Quebec White is an original QCS strain: a feminized OG Kush × White Widow hybrid with 23% THC, 60 to 70 days of flowering and up to 750 g per plant outdoors. Here is what we know from our own specs, from the 17 customer reviews on our site and from what growers generally say about its famous parents.
Quebec White strain at a glance
| Genetics | OG Kush × White Widow |
| Type | Feminized hybrid |
| THC | 23% |
| Flowering time | 60 to 70 days indoors |
| Yield | 350 to 450 g/m² indoors, up to 750 g per plant outdoors |
| Flavour | Earthy, herbal, diesel |
| Plant size | 70 to 90 cm indoors, 1.5 to 2.5 m outdoors |
| Growing level | Easy to moderate |
| Pack | 5 feminized seeds (10 and 20 seed packs also available) |
| Breeder | Quebec Cannabis Seeds (original QCS genetics) |
What is the Quebec White strain?
Quebec White is an original QCS strain: Quebec Cannabis Seeds is its original breeder, and these are our own genetics, bred in Quebec since 2015 by a grower with more than 35 years of experience.
Quebec White is one of our own crosses, built from two of the best-known names in cannabis. From OG Kush it takes potency and a fuel-like edge; from White Widow it takes classic flavour and resilience. White Widow became famous in the 1990s for its frosty, white-coated flowers, and OG Kush is a pillar of North American breeding, so it is no surprise that the combination appeals to both indoor and outdoor growers.
Other seed companies sell their own crosses of these parents, and exact THC, height and flowering numbers can differ from one version to another. The figures in this review are for the QCS version only.
Is Quebec White indica or sativa?
QCS lists Quebec White as a hybrid without an exact indica to sativa percentage, so we will not invent one. Both parents are generally described as balanced to indica-leaning, and the plant behaves like a hybrid: compact enough indoors at 70 to 90 cm, but vigorous outdoors, where it can reach 1.5 to 2.5 m. Customers confirm the vigour: one saw an 8-foot plant that finished in the last week of September, and another reported a plant of almost 9 feet.
The effect is also described as a mix of the two worlds, which is typical of hybrids. If you want to understand the relaxing side, see our guide on what indica does to you.
Smell and flavour: earthy, herbal and diesel
The QCS profile is earthy, herbal and diesel, with the fuel note coming from the OG Kush side. Growers commonly describe OG Kush crosses as pungent, with pine, earth and gas, while White Widow lines are often called earthy and sweet. One customer described the terpenes of Quebec White as very floral and pleasant, which shows that the nose can lean softer than the spec sheet suggests depending on the plant and the cure.
Expect a noticeable smell from week five of flowering on. If you grow in a stealth-sensitive spot, plan carbon filtration or an outdoor spot downwind.
Quebec White effects
QCS describes the high as opening with a happy, cerebral lift and easing into physical relaxation. That fits what consumers commonly report about OG Kush and White Widow crosses: an energetic, talkative start followed by a calmer body feel. One customer wrote that the smoke hit hard for about three hours, so respect the strength, especially if you are not used to 20%+ THC.
Effects vary from person to person and with the amount. Start low, go slow, and avoid mixing it with tasks that need full attention. We make no medical claims.
How strong is Quebec White? THC content
QCS lists Quebec White at 23% THC. That is a solid, above-average figure, strong enough to satisfy experienced consumers without being at the extreme end. As always, the real number depends on your lighting, nutrients, drying and curing. If you want to see what higher-potency options look like, browse our seeds over 25% THC.
Growing Quebec White: flowering time and yield
Indoors the plant is compact at 70 to 90 cm and flowers in 60 to 70 days, with yields of 350 to 450 g/m². Outdoors it is usually ready in late September, which suits short northern seasons, and can give up to 750 g per plant. Several customers back this up: one harvested around 800 g of dry buds from one outdoor plant, another got over 2 lb from a plant, and two plants trained hard reached roughly 1.5 lb each.
QCS rates it easy to moderate and notes that the White Widow side helps against pests and mould, with the usual caveat that mould tolerant does not mean mould proof. Practical tips: prune and support the colas outdoors, keep the lower canopy open in September when powdery mildew risk rises, and do not let it get away from you in veg, since it is a vigorous plant. Check your plants regularly in mid to late flower. One customer reported a plant that turned hermaphrodite late in flower, which is rare in the reviews but worth watching for with any stress.
What customers report
Quebec White has 17 reviews on our site and averages 4.4 out of 5. About ten show written comments.
- Big yields: reports of 800 g of dry buds from one outdoor plant, over 2 lb from another, and around 1.5 lb per plant on two heavily trained plants.
- Tall, vigorous plants: several outdoor growers saw 8 to 9 feet, ready in the last week of September or first week of October.
- Great germination: multiple customers reported all seeds germinating, including free bonus seeds.
- Clean flowers: one grower reported no mould or mildew and called it one of the best strains they have grown; another loved the floral terpenes.
- Easy to grow: one reviewer said it was easy, with big plants and good outdoor yield, and a repeat customer said three years of trying had meant three years of success.
- The honest complaint: one grower rated it 1 out of 5 because a plant turned hermaphrodite during flowering, which had not happened to them in many years of growing. QCS notes this on the product page and advises watching plants in September.
Is Quebec White right for you?
Quebec White is a good fit if you want a potent, classic-tasting hybrid with a happy start and a relaxed finish, and especially if you grow outdoors in Quebec or a similar northern climate, where a late September finish is a real advantage. Indoor growers get a compact plant with a medium yield. It is a weaker match if you want the very highest THC or the fastest finish, or if you cannot check plants regularly in late flower.
Looking for something faster? Our fast version seeds finish sooner. You can also browse all feminized seeds or read our review of Blue God.
Why grow Quebec White from Quebec Cannabis Seeds?
- Bred in Quebec by the original breeder. Quebec Cannabis Seeds (QCS) is the original breeder of Quebec White, one of our own QCS Originals, bred here since 2015 by a grower with 35+ years of experience.
- Guaranteed. 80% germination guarantee with replacements, and delivery guaranteed. If a pack under-performs, email us and we make it right.
- Free seeds with every order, and free shipping on orders over $200.
- Fast, discreet shipping. Ships from Quebec within 24 hours Monday to Friday in plain, unbranded packaging, to Canada (Canada Post) and to the USA (1–2 business days by Express).
- Real support. Every email answered within 24 hours.
Buy Quebec White seeds → Canada delivery Shipping to the USA
Quebec White: frequently asked questions
What is the Quebec White strain?
Quebec White is an original QCS strain: a feminized cross of OG Kush and White Widow with 23% THC, bred by Quebec Cannabis Seeds in Quebec.
Is Quebec White indica or sativa?
QCS lists it as a hybrid and does not publish an exact indica to sativa percentage.
How strong is Quebec White?
QCS lists Quebec White at 23% THC.
How long does Quebec White take to flower?
Indoors it flowers in 60 to 70 days. Outdoors it is usually ready in late September.
How much does Quebec White yield?
QCS lists 350 to 450 g/m² indoors and up to 750 g per plant outdoors. These are ranges that depend on growing conditions, not promises.
Is Quebec White easy to grow?
QCS rates it easy to moderate. It stays at 70 to 90 cm indoors and grows 1.5 to 2.5 m outdoors, and pruning and support are recommended outdoors. One customer reported a hermaphrodite plant, so check plants in late flower.
What does Quebec White taste and smell like?
QCS describes it as earthy, herbal and diesel, with a fuel note from the OG Kush parent.
Where can I buy Quebec White seeds in Canada and the USA?
You can order Quebec White feminized seeds from Quebec Cannabis Seeds. We ship from Quebec within 24 hours Monday to Friday: Canada in 3 to 7 days by standard mail or 2 to 3 days by Express, and the USA in 1 to 2 business days by Express. Shipping is free over $200, packaging is plain, delivery is guaranteed, the 80% germination guarantee comes with replacements, and every order includes free seeds. Questions? Call 514-805-2741.
A note on the numbers in this article: harvest dates, flowering times and yields are ranges, not promises. They vary depending on growing conditions: the grower, the method and the season's weather. No strain is 100% mold resistant. How we set these numbers →
About this article
Published by the Quebec Cannabis Seeds team. QCS was founded in 2015 by Trent LaPierre, a Quebec breeder with more than 35 years of hands-on growing experience. Genetics we bred ourselves are described from our own breeding work; when a strain comes from another breeder, we say so and credit them. How we work. Last updated: November 6, 2026.
Sources and further reading: Cannabis Act (Justice Laws, Government of Canada) · Cannabis Regulations (SOR/2018-144). Rules on cannabis seeds differ by province and state; check your local regulations before ordering.
