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Blackberry Autoflower Cannabis Seeds Feminized
$52.00
5 Seeds Per Pack
Strain at a Glance
An easy, indica-dominant autoflower with 20% THC and a sweet berry flavour.
Genetic Balance
Key Information
- THC20%
- CBDLow, 0–1%
- GeneticsBlackberry Kush × Ruderalis
- TasteBerry • Earthy • Floral
- Indoor flowering time8 weeks
Specifications
| Strain | Blackberry |
|---|---|
| Seed type | Autoflower, feminized |
| Genetics | Blackberry Kush × Ruderalis |
| Genetic balance | Autoflower, indica dominant |
| THC | 20% |
| CBD | Low, 0–1% |
| Taste | Berry, Earthy, Floral |
| Indoor flowering time | 8 weeks |
| Yield | Up to 350 g/m² indoors, 70–300 g per plant outdoors |
| Pack size | 5 Seeds Per Pack |
These figures are ranges, not promises. Flowering time, harvest date and yield vary depending on growing conditions: the grower, the method and the season's weather. "Mold resistant" means mold tolerant: less prone to mold and slower to be affected. No strain is 100% mold resistant. How we set these numbers →
Taste & Aroma Profile
Sweet berry, from its Blackberry Kush parent — ripe blackberry over a soft earthy Kush base, on buds reviewers call “big and sticky” with “a wonderful smell”.
About Blackberry
Genetics & strain profile
Blackberry Autoflower crosses Blackberry Kush with Ruderalis: an indica-dominant autoflower with 20% THC and low CBD that carries our beginner-friendly and mould tolerant badges and has two grower diaries on GrowDiaries. It has 12 reviews averaging 4.3 out of 5, and they are candid about two things: size and colour. The happy growers got “big sticky buds, a wonderful smell and a delight to smoke” and “dense nugs that came out perfect”, with 4 of 5 seeds up and 100% germination on a heat mat for another. But one indoor grower found 3 of his 4 plants “short and stubby — 2 feet — with giant fat colas” and only two turned purple, and a 2-star reviewer who bought it for the purple buds in the photo got all green plants under 15 inches and 3 ounces from three of them, next to a 35-inch free Mazar that gave 4 ounces alone. Read the growing section before you buy: this is a small, fast plant, and the purple is a phenotype and temperature thing, not a guarantee. Our seeds are guaranteed.
How Blackberry Autoflower grows
Because it is an autoflower, it flowers on its own schedule without a change in light hours, and flowers in 8 weeks — roughly 10 to 11 weeks from seed. The plant reaches 70 to 110 cm in good conditions, but reviewers report plenty of 2-foot plants and one batch under 15 inches, so expect the low end of that range unless the plant gets a strong start: start it in its final 3 to 5-gallon pot, give it 20 hours of light from day one, keep it warm, and do not transplant or top it. Yields are up to 350 g/m² indoors and 70 to 300 g per plant outdoors depending on care — one grower’s three plants gave 3 ounces total, which is the lower end of honest. It has a natural resistance to common pests and mould and handles a Canadian balcony well. The purple colour comes from the Blackberry Kush side and shows on some phenotypes when night temperatures drop in the last weeks; grown warm, many plants stay green. If you want a bigger autoflower, look at the links below.
Taste, aroma and effect
Sweet berry, from its Blackberry Kush parent — ripe blackberry over a soft earthy Kush base, on buds reviewers call “big and sticky” with “a wonderful smell”. The effect is mainly relaxing, with a euphoric lift: a happy start that settles into a calm, heavy body, an evening strain, and at 20% THC a manageable one. For bigger autoflowers, see Devil XXL Autoflower, Critical Autoflower and AK-47 Autoflower; for purple colour on a full-season plant, Granddaddy Purple or Blackberry Runtz; for a berry autoflower with more size, Blue Dream Autoflower.
Frequently Asked Questions
How long does Blackberry Autoflower take to flower?
8 weeks, roughly 10 to 11 weeks from seed.
How much does Blackberry Autoflower yield?
Up to 350 g/m² indoors and 70 to 300 g per plant outdoors. One grower got 3 ounces from three small plants; another got big fat colas on 2-foot plants.
How tall does Blackberry Autoflower get?
70 to 110 cm in good conditions, but reviewers report many 2-foot plants and one batch under 15 inches. Start it in its final pot with 20 hours of light.
Will Blackberry Autoflower turn purple like the photo?
Not always. The purple shows on some phenotypes with cool nights in the last weeks; one grower had two of four purple, another had all green.
How strong is Blackberry Autoflower?
20% THC with low CBD.
Is Blackberry Autoflower easy to grow?
Yes. It is beginner-friendly, resists pests and mould, and reviewers report 80 to 100% germination.
What does Blackberry Autoflower taste like?
Sweet ripe blackberry over an earthy Kush base.
What are the parents of Blackberry Autoflower?
Blackberry Kush, crossed with Ruderalis.
Where can I buy Blackberry seeds in Canada?
Right here at Quebec Cannabis Seeds. Orders ship from Quebec within 24 hours on business days, in plain packaging, across Canada and to the USA, with a germination guarantee.
Order with confidence
- Germination guarantee. If fewer than 80% of your seeds germinate, we send replacement seeds.
- Delivery guarantee. We guarantee delivery of your order.
- Discreet packaging. Plain, unbranded packaging with no logos and no mention of the contents. No signature is required.
- Shipped from Quebec within 24 hours. Orders usually ship the same day or within 24 hours of payment, Monday to Friday. Canada: 3 to 7 days, or 2 to 3 days by Express. USA: 1 to 2 business days by Express. Free shipping on orders over $200.
- Your privacy. We do not sell or share your information with third parties.
- Free seeds with every order, and real people to help: 514-805-2741, Monday to Friday, 11 AM to 6 PM EST.
Details: Shipping · Return policy · FAQs · Privacy policy
- Availability: In Stock
- Model: Q.C.S.
- Manufacturer: AlphaType for Quebec Cannabis Seeds
12/01/2025
I bought this strain to get blackberry plants like the picture, but they are all green! Not only that, but they all were less than 15" tall. The yield was 3 oz dried for the 3 plants that grew. The free Mazar I received was 35" tall and had a dry (cured) yield of 4 ounces for 1 plant. A plant that finishes in 2 months is a waste of time and money! Decent to smoke though.
Sorry this one didn't turn out as hoped. Every pack is covered by our guarantee: delivery is guaranteed, germination is guaranteed at 80%, and if your seeds didn't pop or the wrong pack arrived we re-mail a replacement — no arguments, just contact us. Our germination and growing guides cover the most common causes of a disappointing grow: https://quebeccannabisseeds.com/how-to-germinate-cannabis-seeds
— QCS Seeds
25/06/2024
This grow came out great! 4 out of 5 germinated. All 4 grew well except for the fact that 3 out of 4 grew only grew 2 feet high .They were short and stubby but with giant fat colas throughout. The one tall 1 grew to 4 1/2 feet. My only complaint was that only 2 plants came out purple. The nugs were dense and came out perfect. .I grew this indoors with the Auto Girl Scout Cookies and this is my 4th seed to harvest completed. This by far was my best run!!!
30/04/2024
Les graines reçus ont un taux de 100% dans un towel avec tapis chauffant. Super et les plants sont forts dès le début.
16/11/2023
quick and great service....product is amazing
29/08/2023
These guys where great , gave me big sticky buds , a wonderful smell and a delight to smoke.
I recommend this strain, and by the way … been growing for 18 months now, always bought my seeds here and always been satisfied, you guys provide me with some serious good weed.
Thanks a million and keep on growing
25/02/2023
Order received fairly quick and I appreciate that. Also, thank you for the complimentary seeds. The one concern that I have is that I received only 4 blackberry seeds, not 5, in the order.
05/12/2022
What wattage light did u guys use. I am new at growing
22/11/2022
C'est une belle plante avec un bon goût et surtout un bon buzzz ,
06/11/2022
Easy to grow outside. Best yield of any auto I have attempted. Smooth and tasty. Making tincture and will advise how that does.
26/08/2022
My only disappointment with this strain is the flowering time that is described on the website. Eight weeks is way too early. You can chop it at eight weeks if you want to and it’s a beautiful plant. But if you want that extreme purple like is on the photo that you want to wait until 10 or 11 weeks. I’m growing in DWC and I flushed at 7 1/2 weeks because I was told eight weeks is the flowering time. I should have waited until 9 1/2 weeks to flush in my opinion. But it’s still a beautiful flower. It’s gorgeous. Definitely dispensary type quality bud