How many black berry autos should I put in a 2x4x6 and what wattage led should I get for them.

Hello, thanks for asking. You can fit around 4-6 plants, depending on the pot size and you will need a 600w HPS (for six plants) or the LED equivalent. For more info please send an email to info@2fast4buds.com.

would you recommend just giving them water for the first 2-3 weeks? im using coco soil indoors 600w hps and all canna nutrients required on standby

You should give them plain pH'd water until you see the first pair of true leaves and only then start feeding with a light nutrient solution.

My blackberry has dark leaves at the bottom and light green leaves on top is that normal for this strain?

Hello, please send an email to info@2fast4buds.com and we'll gladly help you.

I would like to ask you about the time of blackberry outdoor. From seed (germ) to harvest how long it s takes 8 weeks or 8 weeks takes flowering period?

It will take you about 8-9 weeks from seed to harvest.

I just started two blackberry seeds in 3 gal pots. How long will it take to harvest? I use fox farm nutes. Is this okay for auto strains or should I use half-strength? Should I use 5 gal next time?

Hi, Anthony! Well, strictly talking, the noted total period in the description it's the minimum time the plant needs to be done. This is not an exact number as you may elongate it one or two more weeks, depending on each plant's needs or the desired effects. About the nutes you mention, we haven't had the opportunity to test them, but what we know is that our plants become big so they like to eat a lot. We don't suggest you to skimp on the feeding, all the opposite. Blackberry is a big one! The pots are fine, but larger ones will let you grow bigger plants. Cheers!

Hey everyone! Can I ask for any suggestions on neut and cal mag levels on the blackberry auto? I'm using general hydroponics if anyones used this before? I'm growing 4 ladies in 12L buckets using coco

Hello, if you're growing in a sterile medium such as coco fiber you should provide calmag, follow the manufacturer's schedule. You should also follow the manufacturer's schedule for the nutrients, if you're not sure take a look at our blog, we have a table for feeding autoflowers designed to avoid overfeeding.

I got a gift pack with Blackberry inside. Is it always autoflowering?

Thanks for asking. Yes, we only sell autoflowering seeds.

Would you recommend Blackberry for commercial growing?

Of course! Our Blackberry produces beautiful purple buds that end up completely covered in resin and reek of a delicious smell of berries and kush. The perfect bag appeal and terpene profile for commercial growers.

I was just wondering if in a 5x5 tent with 1000w hps with 9 plants I could really expect 450g+. If I have proper ventilation and nutes is this possible? 3 gsc, 3 blackberry and 3 rhino.

Yes, if grown properly our Girl Scout Cookies can yield around 140g, Blackberry around 120g, and Rhino Ryder around 100g per plant.

hi, i'm looking for order some seeds by you're company. For the blackberry you say 18h light per day. Must this strain having 18h in flowering period or just in VEG please?

Hi, strainman! Thanks for asking! Well, we suggest 18/6 cycle as it's the optimal between cost and yield. But you can run them to 24/0 if you can afford it. More light hours, more yield. But it's more important the wattage of your setup: Higher wattages obtain higher yields. It's better to use more powerful lights less hours and let them sleep a bit too.Autos don't need to follow different light schedules according to the cycle in which they are. You can run them with the same schedule from the day one to the harvest day. As we commented, some growers put them in 24/0 from the beginning till the end to get the highest yields. So it's up to you! Live and learn on the go is the best for us. Read, try and watch how they react to your actions, and you'll find your own method finally!Thank you! Hope it helps a bit! Enjoy growing faster!

This strain is always purple?

Yes, more or less, we can assure that our Blackberry Auto will turn purple in the 90% of the cases.

I live in very very hot area, will I get this depp purple colors?

It is possible but higher temperatures break down anthocyanins which are responsible for the unique colors in this strain, so the higher the temperatures the fewer colors your plant will exhibit. If your temperatures do not exceed 27 Celsius, it's more likely there won't be a problem at all.

Someone please explain, I'm considering buying a hydroponic cabinet or grow room. What does 1.3 pounds per light mean? Thanks

Hi! Thanks for asking!Well, it use to mean the expected yield you can reach with a specific light. We suggest minimum 600w/m2.Hope it helps a bit!

How many days are you averaging from germination to harvest ?

Hi, thank you for your question. Our Blackberry Auto will completely mature in approximately 63 days.

What’s the ideal temperature to grow this at?

Hello, our Blackberry will grow fairly well in all climates but it's recommended to avoid hotter temperatures for the best results. Thanks for asking.

Is blackberry Auto hard to grow outside? And does anyone have any suggestions

Hello, thanks for asking. Our Blackberry Auto is quite resilient to colder climates so it should grow very well outdoors. If you are looking for other similar strains make sure to take a look at our Strawberry Pie, Banana Purple Punch, Strawberry Gorilla and Afghan Kush.

HI. It's my first time growing, I have my seed they have germinated already, when I shall start with lights?

Hello, thanks for asking. You should start with the lights as soon as the seed is in the substrate.

My plant is 8 weeks old, it has not turned purple anywhere.

Hello, thanks for asking. It's not uncommon for some plants to only turn purple during the last 2 weeks before harvest. If you need more help feel free to send an email to info@2fast4buds.com and we'll be happy to help you out.

Buy Blackberry Auto Cannabis Seeds | 42 Fast Buds United States

Parameter	Value
Taste	Berry, Earthy, Sweet
CBD	< 1%
Harvest US Indoor	1.5 – 2 oz/ft2
Harvest US Outdoor	2 – 9 oz/plant
Size	XL
Height US	28 – 47 inches
Flowering	9 – 10 weeks
Room	Indoor/Outdoor/Greenhouse/Mixlight
Gender	100% Female
Genes	Sativa 25%/Indica 75%
Genetics	Original Blueberry Auto, reverse Blackberry phenotype isolation line F3
Seed Type	F3 Feminized autoflower, locked-in phenotype

Description

Our Blackberry Auto took first place at the Oregon Autoflower cup and is a great choice for first growers and Indica fans. This strain boasts up to 23% THC and is made up of some of our finest genetics, making it a tall growing plant with a great harvest reaching up to 110cm in height.

Blackberry Auto is a resin-rich, indica-leaning autoflower bred from DJ Short Blueberry crossed with FB Auto #1, developed into a stable F5 feminized line. This genetic pairing was selected to preserve deep berry terpenes, strong pigmentation, and reliable resin output in an easy-to-run, XL-format autoflower.

Plants grow 70-110 cm tall with a dense, bushy structure, tight internodes, and a pronounced central cola. As flowering progresses, buds swell into rounded, dark purple flowers heavily coated in sticky trichomes, giving the plant a classic “berry bush” appearance. Indoor yields reach 400-500 g/m², with outdoor plants producing up to 150 g per plant under favorable conditions.

The terpene profile is rich and grounded, dominated by blueberry and forest fruit notes with floral accents and earthy undertones. With THC levels up to 22% and consistent resin coverage, Blackberry Auto is well suited for extractions, producing smooth, flavorful concentrates with a soft, kushy character.

Finishing in 9 weeks, Blackberry Auto is an excellent choice for growers seeking deep berry terpenes, heavy visual appeal, and dependable extraction performance in a calm, indica-forward autoflower that delivers without complexity.

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TurtleByrd

Reviewed 30 September 2017

Purple love!!!

I wanted to share some blackberry grown this season in an outdoor medical garden in eastern Washington State (46 degrees N Latitude, 4000 ft Altitude). Grown off-grid, organically, in homemade soil. seeds popped 7/05, moved outside 7/15, and will be harvested on 10/1. Incredible coloring as the temps started to drop. Thanks for the killer genetics, FastBuds!!!

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Merkwan

Reviewed 25 May 2022

picture perfect tight nuggets

I loved how she turned out. the bag appeal is 10/10, purple with bright orange highlights and almost white with frost. they have a lush berrylike aroma so you’re know immediately you’re in for a treat. the high is balanced but makes you very lazy. don’t smoke this one during the day unless you need a power nap.

4 people found this helpful

Drom

Reviewed 22 December 2016

Show her some love family

She is so gorgeous had to do an entire photo-session

3 people found this helpful

Oxenrider

Reviewed 15 October 2022

Fastbuds are the best!

My only shop for autoflowers

2 people found this helpful

Instagram @Hypegrower. Verified customer

Reviewed 4 November 2020

Fat Blackberry Auto

This plant turned out into a huge cola one, is very very very fat, was my first time grow ever so I was pretty worried about all things. Everything went fine and now I’m ready to flush after 8 weeks. Super strong plant, I did some mistakes dosing way more nutes than necessary, plant recovered and didn’t show any sing of stunting or foliage damage. Perfect plants for newby growers. Smell is amazing and it became super frosty in no time, I’m waiting for curing. Can’t wait

CheapyGrower

Reviewed 3 November 2020

The purple Indica

The blackberry is the darkest strain i've grown! A beautiful deep purple shade with a sweety berry smell

fastman. Verified customer

Reviewed 23 October 2020

blackberry fruits

Very easy to grow strain that did not require much attention. Smells just like forest fruits, very fascinating!

GREENTHUMBEDGROWER

Reviewed 9 November 2023

Blackberry Auto

This is an amazing plant. Grew into a monster, extremely colourful and pungent. Feel free to check out the whole grow on over at Grow Diaries.

1 people found this helpful

Czarnecki

Reviewed 20 May 2022

she did perfectly in a micro grow

I only used LST on her but it was enough to make her a compact, insanely branchy lady. maybe next time I’ll try supercropping but even without it she filled out nicely and yielded about 50 grams of absolutely beautiful nuggets. definitely my best yielding purple auto this far and a great experience throughout

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Neumaier

Reviewed 7 December 2025

Wow

Ez to grow eavon with all my over training Took 20wks n gave me 15.5 dry. Very satisfied I'll be growing it again

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Blackberry Auto

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