Crush Kush Strain Review: THC, Effects, Flowering Time & Yield

Crush Kush is an original QCS strain: a feminized, mostly indica photoperiod with 21 to 25% THC, 50 to 60 days of flowering and yields of 650 to 750 g/m² indoors. This Crush Kush strain review covers its flavour, effects, growing needs and what customers report, using QCS product data, real reviews and what growers commonly say about Kush-type plants.

Crush Kush strain at a glance

What is the Crush Kush strain?

Crush Kush 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.

Crush Kush is a feminized, mostly indica photoperiod strain bred by Quebec Cannabis Seeds. QCS lists 21 to 25% THC, a flowering time of 50 to 60 days indoors and a very big yield: 650 to 750 g/m² indoors and up to 2,000 g per plant outdoors. The page calls it fast, compact and heavy-yielding, with dense, resin-rich flowers.

The Crush Kush strain does not come with a published parent list on our product page, so we will not guess at one. What the page does give us is a clear personality: a compact, mostly indica plant that finishes quickly for a photoperiod and rewards you with weight.

A note on the name. “Crush” and “Kush” are common words in cannabis naming, and other seed companies sell their own strains with similar names and different genetics. Other seed companies’ versions may differ; every number in this review is for the QCS version.

Is Crush Kush indica or sativa?

QCS lists Crush Kush as mostly indica and does not give a percentage. The description matches what you would expect from that: a compact plant with dense, resinous flowers, quick to finish and heavy in the jar. Mostly indica plants are usually described as relaxing and body-centred, and QCS says the effect here is relaxing and strong.

If you want a clear picture of what that indica side tends to feel like, read what indica does to you.

Smell and flavour: earthy, herbal and woody, with grape and orange

The product page describes the taste as earthy, herbal and woody, with subtle hints of sweetness. Customers paint a fruitier picture: one grower said the plant smells exactly like grape soda or popsicles with a faint hint of skunk or fuel, while two others, writing separately, described an orange and grape soda smell, and the page notes that growers report grape and orange notes.

That combination of a Kush-style earthy, woody base with grape and orange on top is a lovely one, and it also shows up in colour: customers report the top flowers turning purple in mid to late flower, and one grower said the plant turned very purple near the end. Colour change in cannabis is commonly linked to genetics and cooler night temperatures, so results vary by grow. Drying slowly and curing in jars will protect the fruitier notes.

Crush Kush effects

QCS describes the effect as relaxing and strong and recommends starting with small amounts. A customer who tested one of their jars with a store THC kit reported a result just over the maximum of the kit, which they put at about 24%, and said they were very pleased. That is one person’s test and not a lab certificate, but it fits the 21 to 25% range QCS lists.

Consumers commonly describe mostly indica Kush-type strains as calming, physically heavy and well suited to the evening, with dry mouth and dry eyes as the usual side effects. Effects vary from person to person, so start low, wait, and treat this as a strong flower.

How strong is Crush Kush? THC content

QCS lists Crush Kush at 21 to 25% THC. The CBD level is not listed. That is a strong range that sits above the average for retail flower and within reach of the top tier, without being the strongest on our shelf.

As always, final potency depends on the grow, the harvest timing and the dry and cure. If you want to go beyond 25%, see our seeds over 25% THC.

Growing Crush Kush: flowering time and yield

Indoors, Crush Kush needs 50 to 60 days of flowering after a normal vegetative period, which is fast for a photoperiod. Outdoors it is typically ready in early October. QCS lists 650 to 750 g/m² indoors and up to 2,000 g per plant outdoors, the latter for a large, well-grown outdoor plant in good conditions.

The charts below show the flowering window and the yield ranges from the product page. They are ranges that depend on your setup, soil, space and weather, not guarantees. An outdoor result near the top of the range is a big-plant outcome that needs a long season, plenty of root room and good sun.

Practical growing tips

QCS recommends moderate humidity and strong airflow late in flower, which is sensible for any plant that builds dense, resinous buds. The page also gives pH ranges for soil and for coco or hydro, so check it before you mix your nutrient solution. Remember that mold tolerance is not mold-proofing, so thin the lower growth if airflow is tight, and watch humidity as the flowers fatten up.

A compact plant is a good candidate for training. Topping and low-stress training spread the canopy so more sites receive light, and a net or trellis helps hold up heavy branches near harvest. Outdoors in Quebec, early October is late for cold areas, so start seeds indoors early, pick a sunny spot and keep frost protection ready. For a general method, see our feminized seeds collection.

What customers report

Crush Kush has six customer reviews on the site. Five are five stars and one is three stars. Here is what they say, including the honest complaint.

• Free seeds that grew well: several customers received Crush Kush as a free seed with an order. One said the seeds sprouted easily, grew quickly, turned very purple near the end, harvested in mid-October with good yield and great smoke.
• Grape and orange smell, dense buds: a grower mid-bloom reported a grape soda smell with a faint skunk or fuel hint, heavily stacked buds and trichome-caked sugar leaves. Two other reviewers described a grape and orange soda smell, very dense buds and big plants, and had not harvested yet.
• Best they have grown: one customer called it the best thing they had grown and put it at about 24% on a home THC kit.
• Germination and stability complaint (3 stars): one grower said the plant matched the description at week five of flower, but reported mutations in seedlings going into the third week of veg and one hermaphrodite plus one mutated plant from a 10-seed pack. They also said the page did not list the proper pH.

The honest takeaway is mostly strong praise, with one customer reporting instability in one pack. Photoperiod plants can occasionally show hermaphroditism under stress such as heat, light leaks or other disruptions, so keep the environment steady. If a pack disappoints, email us: our 80% germination guarantee exists for that reason. The pH ranges the reviewer was looking for are now given in the page’s growing notes.

Is Crush Kush right for you?

Crush Kush is a good match if you want a compact, fast-finishing photoperiod with big yields, 21 to 25% THC and a relaxing, earthy, grape-and-orange flavour, whether you grow in a tent or outdoors with enough season.

It is less ideal if you want an autoflower or need a guaranteed small plant. Explore our feminized seeds, compare with seeds over 25% THC or read our review of Black Cherry OG for another fruit-forward profile.

Crush Kush: 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 Crush Kush seeds →