Français Quebec LSD is an original QCS strain: a mostly indica, feminized cross of Skunk #1 and Afghan Indica with 25% THC, 60 to 65 days of flowering and up to 700 g/m² indoors. This Quebec LSD strain review covers the specs on our product page, the 27-review 5-star rating and what growers generally report about LSD-style plants.
Quebec LSD strain at a glance
| Genetics | Skunk #1 × Afghan Indica |
| Type | Feminized, mostly indica |
| THC | 25% (CBD 1.2%) |
| Flowering time | 60 to 65 days indoors |
| Yield | Up to 700 g/m² indoors, up to 700 g per plant outdoors |
| Plant height | 90 to 100 cm |
| Outdoor harvest | Early October |
| Flavour | Earthy; aroma of chestnut, earth and musk |
| Pack | 5 feminized seeds |
| Breeder | Quebec Cannabis Seeds (original QCS genetics) |
What is the Quebec LSD strain?
Quebec LSD 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 LSD is a mostly indica strain bred by Quebec Cannabis Seeds from a cross of Skunk #1 and Afghan Indica. It lists 25% THC and 1.2% CBD, flowers in 60 to 65 days and stays compact at roughly 90 to 100 cm. The page describes a psychedelic, euphoric effect and an aroma of chestnut, earth and musk.
A word on the name. LSD is one of several well-known cannabis strain names, and different seed companies breed their own versions. The cut most often described by growers across the web is usually reported as a Skunk #1 × Mazar × Northern Lights #5 cross, which is a different parentage from ours. Other seed companies' versions may differ; the numbers on this page are for the QCS version, a Skunk #1 × Afghan Indica cross. The shared theme is a classic, resinous, heavy-hitting indica-leaning plant.
Is Quebec LSD indica or sativa?
Quebec LSD is listed as mostly indica, without an exact percentage. Both parents fit that picture: Afghan Indica is a classic hardy, resinous line, and Skunk #1 is a long-standing hybrid with a strong indica influence in its structure. At 90 to 100 cm, the plant is a manageable size for a tent or a balcony.
If you are new to indica-leaning plants, our guide to what indica does to you explains what people typically report.
Smell and flavour
QCS describes the taste as earthy, and the aroma as chestnut, earth and musk. That is a deep, nutty, almost hashy profile and a world away from the sugary fruit candy profiles on many seed menus. Skunk #1 lineage plants are known for a distinctive pungency, and musky, earthy notes are commonly associated by growers with Afghan lines.
For a plant this resinous and aromatic, plan for odour control in late flower, and cure slowly: those earthy, nutty notes deepen noticeably with patience.
Quebec LSD effects
The product page lists a psychedelic and euphoric effect. Take that as the QCS description rather than a literal claim; consumers of strong indica-leaning cannabis commonly describe a mix of euphoria and a heavy, calm body feeling. Effects vary a lot with the person, the dose and the setting, and no cannabis experience is guaranteed.
At 25% THC, this is a strong strain. Start low, wait, and do not stack doses. If you have a low tolerance, begin with the smallest amount.
How strong is Quebec LSD? THC content
QCS lists Quebec LSD at 25% THC and 1.2% CBD. That is firmly in the high-strength category, and it is also the headline figure for a plant that does not need to be tall to get there. THC always depends on how the plant is grown, harvested and cured, so treat 25% as what a good grow can deliver rather than a guarantee.
Want to compare with the very strongest plants? See our seeds over 25% THC page.
Growing Quebec LSD: flowering time and yield
Indoors, Quebec LSD flowers in 60 to 65 days and QCS lists up to 700 g/m². Outdoors it is ready in early October and delivers up to 700 g per plant in optimal conditions. Few plants of this height claim such a large yield, which is part of its appeal.
Tips for a compact, high-yield indica-leaning plant: keep the canopy even with light training, use a larger pot to support those yields, and give dense flowers good airflow, since resinous, tightly packed buds are more vulnerable to humidity in the last weeks. QCS does not state a difficulty level, but its short stature and Afghan genetics are commonly associated with sturdy, forgiving plants. Early October is a sensible outdoor target for most of southern Quebec in a normal year. For a faster option, browse our fast version seeds.
What customers report
Quebec LSD has 27 reviews on our site and a rating of 5 out of 5. The review text was not available to summarise here, so we report only the count and the rating rather than invent quotes. Open the product page to read what growers wrote.
Is Quebec LSD right for you?
Quebec LSD suits growers who want a compact, high-yielding plant, who love earthy and musky aromas more than candy ones, and who are comfortable with 25% THC. It is not the plant for a beginner consumer or for a fruity-sweet profile. Compare it with our reviews of Fat Bastard and Blue God, or browse all feminized seeds.
More photos of Quebec LSD
Why grow Quebec LSD from Quebec Cannabis Seeds?
- Bred in Quebec by the original breeder. Quebec Cannabis Seeds (QCS) is the original breeder of Quebec LSD, 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.
Quebec LSD: frequently asked questions
What is the Quebec LSD strain?
Quebec LSD is an original QCS strain: a mostly indica, feminized cross of Skunk #1 and Afghan Indica with 25% THC, 60 to 65 days of flowering and a compact 90 to 100 cm height.
Is Quebec LSD indica or sativa?
QCS lists Quebec LSD as mostly indica, without an exact percentage. Its parents are Skunk #1 and Afghan Indica.
How strong is Quebec LSD?
QCS lists 25% THC and 1.2% CBD. That is a strong strain: start low and wait. Real results vary with the grow and the cure.
How long does Quebec LSD take to flower?
60 to 65 days indoors, and early October outdoors. These are ranges, not promises.
How much does Quebec LSD yield?
QCS lists up to 700 g/m² indoors and up to 700 g per plant outdoors, in optimal conditions.
Is Quebec LSD easy to grow?
QCS does not state a difficulty level. It stays compact at about 90 to 100 cm, which makes it manageable, but dense resinous flowers need good airflow late in flower.
What does Quebec LSD taste and smell like?
The taste is earthy, with an aroma described as chestnut, earthy and musky. The effect is listed as psychedelic and euphoric.
Where can I buy Quebec LSD seeds in Canada and the USA?
Order Quebec LSD seeds directly from Quebec Cannabis Seeds, the original breeder. We ship from Quebec within 24 hours, Monday to Friday, in plain packaging: Canada in 3 to 7 days with standard shipping or 2 to 3 days with Express, and the USA in 1 to 2 business days with Express. Shipping is free over $200, every order includes free seeds, and the 80% germination guarantee comes with replacements. 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.
