Double Cookies Strain Review: THC, Effects, Flowering Time & Yield

Double Cookies is an original QCS strain: a compact, 70% indica autoflower bred from Do-Si-Dos and Girl Scout Cookies, listed at 22% THC. This Double Cookies strain review brings together our own specs, the one real customer review we have so far, and what growers and consumers commonly report about its parents, so you can decide whether it belongs in your garden.

Double Cookies strain at a glance

What is the Double Cookies strain?

Double Cookies is an original QCS strain: Quebec Cannabis Seeds is its original breeder, and these are our own genetics bred in Quebec.

Double Cookies Autoflower is the cookie-lover’s answer to a plant that does not need a light schedule. Quebec Cannabis Seeds bred it by crossing Do-Si-Dos with Girl Scout Cookies, then locking in the autoflowering trait so the plant flowers on its own clock. It is feminized, which means you can skip the sexing stage, and it stays small enough for a closet, a tent or a big pot on a balcony.

Both parents belong to the same dessert-weed family. Girl Scout Cookies is one of the best-known cookie lines, and Do-Si-Dos is generally described as a Girl Scout Cookies cross known for sweet, earthy, floral notes. Putting them together doubles down on that profile, which is where the name comes from. A word of caution, though: several seed companies sell something called Double Cookies, and their crosses, THC figures and flowering times may differ. The numbers on this page are for the QCS version only.

Is Double Cookies indica or sativa?

QCS lists Double Cookies at 70% indica and 30% sativa, so it leans indica. In practice that usually means a short, sturdy plant with broad leaves and dense flowers rather than a tall, airy sativa. That fits the QCS description of a compact plant that works in small spaces.

Remember that “indica” and “sativa” are rough shorthand. Growers use them mostly to describe plant shape and flowering habit, and consumers use them to guess at the feel of a strain, but the real differences come from the full chemical profile. If you want to know what people generally mean by the indica side, read our guide to what indica does to you.

Smell and flavour: earthy, baked dessert, citrus and floral

QCS describes the taste as earthy, baked dessert, citrus and floral, and the product page talks about a sweet, earthy, cookie-like aroma. That matches what most people expect from the cookie family: a doughy sweetness with a little spice and a soil-and-flower backdrop. The citrus note is the one that tends to show up when you break a dried head apart.

Growers commonly report that cookie-type plants get noticeably smellier in the last two to three weeks of flowering, so a carbon filter is a sensible investment in a small tent. The page also mentions that the leaves can turn purple if nights cool late in flowering, which it says does no harm to the buds. That is a cosmetic bonus many growers enjoy.

Double Cookies effects

The QCS description says the high starts euphoric and moves into relaxation. Consumers describing Do-Si-Dos and Girl Scout Cookies crosses in general often mention a happy, uplifted start followed by a heavier body feel, and the indica lean of this autoflower points the same way. Many people prefer that kind of profile in the evening rather than before a busy day.

As always, effects are personal and depend on dose, tolerance, setting and how the flower was dried and cured. Dry mouth and dry eyes are commonly mentioned with high-THC flower in general. If you are new to cannabis or to strong cookie-family genetics, start low and go slow.

How strong is Double Cookies? THC content

QCS lists Double Cookies at 22% THC. That is a solid, mid-to-upper level: stronger than light, everyday flower, but below the very high numbers sold in our THC over 25% seeds section. For most adults with some experience it is a satisfying strength rather than an overwhelming one.

THC is a single figure on a page, and the real number in your jar depends on genetics, light, feeding, drying and curing. A well-grown, well-cured plant can come in at or near the listed level, while a stressed or rushed one can fall short. The product page does not list a CBD figure.

Growing Double Cookies: flowering time and yield

Because it is an autoflower, Double Cookies flowers without any change in light hours. Indoors expect 7 to 8 weeks of flowering, which QCS puts at about 10 to 11 weeks from seed, and a yield of 400 to 450 g/m². Outdoors the page lists up to 200 g per plant. It gives no fixed outdoor harvest date, but its own example is a plant started in late May that finished in August.

Growing tips

Sow straight into the final pot, because autoflowers dislike being moved. QCS suggests about 15 litres for a balcony, and a pot that size also gives the roots room to feed the 400 g/m² potential. Gentle low-stress training, bending and tucking the main stem early, helps spread the canopy without costing the plant time. Avoid heavy pruning or topping, which an autoflower has little time to recover from.

Keep light, temperature and feeding steady, go easy on nutrients early, and watch humidity in the last weeks, since dense cookie-type heads like good airflow. Harvest by checking the trichomes rather than the calendar. New to autos? Our autoflower seeds guide covers the basics.

What customers report

Double Cookies is a newer listing, so there is only one review on our site so far: 5 out of 5 stars from 2024. We would rather tell you that plainly than pad the section.

• Easy and good-looking: the grower harvested five plants and described them as easy to grow and very nice looking.
• Purple at the end: the plants showed purple leaves toward the end of the grow, which matches what the product page says about cool nights.
• Yield: the same reviewer called it very high yielding.
• Complaints: none so far, but with a single review that does not tell you much. Treat our specs as the main guide.

Is Double Cookies right for you?

Choose Double Cookies if you want a small, forgiving, sweet-and-earthy autoflower with a solid 22% THC, a 7 to 8 week flowering window and a relaxing, indica-leaning high. It is a good first autoflower and a good fit for balconies and tents. If you would rather run a photoperiod plant, browse our feminized seeds, or compare it with our review of Fat Bastard if you want something far stronger.

Double Cookies: frequently asked questions

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 →

View Double Cookies seeds →