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K.C 51 Auto - KC Brains
  • K.C 51 Auto - KC Brains
K.C 51 Auto - KC Brains

K.C 51 Auto Feminized Seeds · KC Brains Holland · Potent Sativa-Dominant Autoflower

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The K.C 51 Auto from KC Brains is your express ticket to a powerful, hassle-free harvest. This autoflowering hybrid crosses the legendary KC 33 with Bahia Black Head, delivering sticky, resinous buds in just 10-11 weeks from seed. With a manageable height of around 80 cm (31.5 in) and a yield of up to 85 g (3 oz) per plant, it's perfect for growers short on time or space. Expect an energizing, creative high and a complex aroma of pine and sweet fruits. A robust, beginner-friendly choice that doesn't compromise on potency.
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The K.C 51 Auto Feminized seeds from KC Brains Holland are your secret weapon for a powerful, no-fuss harvest that fits into even the busiest schedule. This autoflowering marvel delivers the intense, creative buzz of a premium photoperiod strain but on an automatic timer, cutting out the guesswork and waiting.

Struggling to find time for your grow?

Between work, life, and everything else, managing a photoperiod plant's light schedule can feel like a part-time job you didn't sign up for. You end up rushing, forgetting to switch the timer, or just letting the whole project slide because it's too complicated. The result? Stunted plants, wasted seeds, and that feeling of missing out on the joy of growing your own.

That's where the K.C 51 Auto changes the game. It's the set-and-forget solution for the modern grower. Just plant, water, and watch. In a little over two months, you'll be harvesting your own premium buds without ever touching a light timer.

How this autoflowering strain saves you time and effort

Forget about light schedules forever. The K.C 51 Auto flowers based on its age, not the photoperiod. This means you can run your lights 18-20 hours a day from start to finish, simplifying your setup and reducing electricity costs compared to a 12/12 flowering cycle. Its compact, bushy structure, reaching about 80 cm (31.5 in), makes it a perfect candidate for discreet outdoor plots or small indoor spaces like a stealth grow cabinet. You won't need to worry about aggressive training or complex pruning; this plant naturally develops a solid yield of up to 85 g (3 oz) per plant with minimal intervention.

Simple steps to grow K.C 51 Auto without wasting a minute

This strain is bred for simplicity and speed. Here's your straightforward roadmap:

  1. Germinate & Plant: Start your seeds in a moist paper towel or directly in a small pot. Once sprouted, transplant to its final pot—we recommend an 11 L (2.9 gal) container to avoid stress later.
  2. Provide Consistent Light: Set your lights to an 18/6 or 20/4 schedule and leave it. No changes needed.
  3. Feed Lightly: Autoflowers prefer a lighter nutrient regimen. A simple, balanced feed during growth and a bloom booster in flowering is enough.
  4. Monitor & Water: Water when the topsoil is dry. Good airflow is key to preventing issues in its dense buds.
  5. Harvest in Weeks 10-11: Watch the trichomes. When most are milky with some amber, your potent buds are ready.

Advantages and benefits for your daily routine

Choosing K.C 51 Auto isn't just about growing weed; it's about reclaiming your time and enjoying the process.

  • Ultra-Fast Cycle: Go from seed to jar in as little as 70-77 days. Perfect for multiple harvests per year or a quick personal stash.
  • Zero Light Schedule Hassle: Eliminate the single biggest point of failure for busy growers. Set the lights and forget it.
  • Discreet and Manageable: Its modest height allows for growing in spaces you already have, like a spare closet or a sunny balcony corner.
  • Beginner-Friendly Resilience: This hybrid is robust and forgiving, making your first (or fiftieth) grow less stressful and more successful.
  • Powerful, Daytime-Friendly Effect: The high is cerebral, creative, and energizing—ideal for enhancing your day, not ending it.

Technical specifications

  • Breeder/Brand: KC Brains Holland
  • Type: Autoflowering, Feminized
  • Dominance: Sativa/Indica Hybrid (Mostly Sativa)
  • Genetics: KC 33 x Bahia Black Head
  • Total Cycle (Seed to Harvest): Approx. 70-77 days (10-11 weeks)
  • Indoor/Outdoor Height: Approx. 80 cm (31.5 in)
  • Outdoor Yield: Up to 85 g (3 oz) per plant
  • Difficulty: Low to Medium
  • THC Level: High (Approx. 18%+)
  • Aromatic Profile: Intense pine and sweet, tropical fruit notes.
  • Effect: Cerebral, creative, and energizing. A great daytime strain.

Tips to integrate it into your habits without friction

Keep your final pot and a bag of a light, airy substrate like a quality potting mix ready to go. When the seeds arrive, you can start immediately—no planning around seasons or light cycles. A small, dedicated space with a simple LED light is all you need. Watering becomes part of your morning or evening routine, a quick check-in that's more therapy than chore. By the time you've forgotten you're even growing it, it'll be time to harvest.

Frequently Asked Questions

How much daily time does growing K.C 51 Auto require?

Minimal. After the initial setup, expect to spend 5-10 minutes every 2-3 days for checking and watering. It's designed for low-maintenance success.

Can I grow it outdoors in a cooler climate?

Yes, but timing is key. Its fast cycle allows you to harness the peak summer sun. Start it indoors for a few weeks if your spring is still chilly to ensure a strong start.

What's the minimum maintenance it needs?

Consistent light, occasional watering, and basic nutrients. Avoid overwatering and overfeeding—less is more with autos. Good air circulation around the plant is the best preventative maintenance.

Personal Experience of Pevgrow’s CEO (Alan)

I've run the K.C 51 Auto in our test space specifically to see how it handles a "neglect-tek" approach for busy people. I used a simple 350W LEC light on an 18/6 timer the entire time. I planted directly into an 11 L final pot with a light mix to avoid transplant shock. For nutrients, I kept it very simple: a mild grow formula for the first few weeks, then switched to a basic bloom booster. The plant really does its own thing. It stayed surprisingly compact but stacked on dense, frosty buds that reeked of pine and lemon. The yield was impressive for the effort—I pulled just over 80 g (2.82 oz) of solid bud. The high is exactly as advertised: a clear-headed, creative lift that's perfect for getting stuff done or just enjoying a sunny afternoon. My tip? Don't pamper it. It thrives on a little benign neglect. Just make sure it has good light and isn't sitting in soggy soil, and it will reward you handsomely.

Type: Type Autoflowering
Banks: Banks KC Brains Holland
Genetics: Genetics KC 33 x Bahia Black Head
Phenotype: Phenotype Sativa/Indica hybrid
Indoor production: Indoor production Medium
Outdoor production: Outdoor production 85 gr/plant
Indoor height: Indoor height 120 cm.
Crop cycle since germination: Crop cycle since germination 90 days
THC: THC 18%


  • Is the shipping discreet?

    Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.

  • Do you ship worldwide?

    Yes, we ship to almost every country in the world although you need to know the current legislation in your country to make sure that you do not break any regulations with the germination of the seeds.

    UK: 3-4 days (express)
    USA: 4-5 days (express)
    Australia: 4-5 days (express)
    Japan: 4-5 days (express)
    Canada: 4-5 days (express)
    South Africa: 4-5 days (express)
    New Zealand: 5-7 days (express)
    View all

    The customer must be informed about the laws of their country regarding seeds or other products that may be purchased on our website, the possession of which may constitute a criminal offence in the country of receipt.

    We cannot be made responsible for the wrong use that some people decide to give to the seeds, so please don't act against your national laws.

    Due to problems with customs you can check here for restrictions to certain countries.

  • What payment methods and currencies do you accept?

    We accept the following payment methods: Bank transfer, Cryptocurrencies, cash, credit and debit cards and cash on delivery (Spain, Belgium, France, Italy, Portugal).

    You can change the currency on the top right to know the price of the products in your local currency and of course pay this way.

  • How long does it take to ship my order?

    In 24/48 hours we will ship your order.

  • Are the seeds guaranteed to germinate?

    If you live in a country where the cultivation of cannabis is legal and you decide to plant the seeds, it is good that you know that all the seeds that we commercialize have germination guarantee.

    If you germinate with the method of paper napkins and you have followed all the steps that we indicate here, you will only have to return us the seeds not germinated in their original packaging and when we receive them we will proceed to the change.

    Then we take care of requesting the return to the seed bank, we do not transfer this responsibility and time to our customers.

  • What if I receive a bad or damaged product?

    If you receive a broken product due to transport, you have to notify us within 24 hours for insurance coverage, always contact us as soon as possible and we will fix the problem!

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