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C4-Matic 420 Fast Buds Autoflowering Seeds · FastBuds · High-Yielding, Easy-Growing Hybrid

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C4-Matic 420 Fast Buds is a powerful autoflowering hybrid from FastBuds, bred from Skunk, White Widow, Big Bud and Ruderalis. It delivers dense, resinous buds in just 7–8 weeks, with a balanced uplifting and relaxing effect. Ideal for growers seeking big yields with minimal effort, both indoors and outdoors.
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C4-Matic 420 Fast Buds is a high-performing autoflowering hybrid that delivers dense, trichome-covered buds in just 7–8 weeks, offering a balanced high and impressive resistance to mold and pests.

Worried your grow will fail before it even starts?

Let’s be real — not everyone has the time, space or green thumb to babysit finicky plants. You want something that actually works, without the stress of constant monitoring or the fear of losing your crop to mildew or bugs.

What if your plant just… handled it?

Imagine a strain that laughs off humidity spikes, ignores pests, and still packs on frosty buds like it’s nothing. No daily pH checks, no nutrient lockouts, no surprise powdery mildew. Just plant it, feed it, and watch it thrive — even if you’re new to growing.

C4-Matic 420 Fast Buds: resilience built in

That’s exactly what you get with C4-Matic. This hybrid combines Skunk, White Widow and Big Bud with Ruderalis for automatic flowering and unmatched hardiness. It grows compact but powerful, perfect for stealth grows or tight spaces, and finishes fast — no waiting months to see results.

Built for discretion, packed with power

C4-Matic stays short and bushy, reaching just 80–110 cm (2.62–3.61 ft), making it ideal for indoor tents or hidden outdoor spots. Its dense structure hides well under cover, and the strong, fruity-skunky aroma? Easy to manage with a simple carbon filter. Whether you're in a small apartment or a remote garden, this plant keeps a low profile without sacrificing yield.

Total control from seed to harvest

  • Autoflowers in 7–8 weeks — no light cycle changes needed
  • Compact size fits in tight spaces and stays under the radar
  • Resistant to mold and pests — less stress, fewer surprises
  • Consistent results even for first-time growers
  • High trichome production means maximum potency and flavor
  • Easy to train with LST for better light exposure
  • Thrives in soil or coco with minimal feeding

How to grow C4-Matic 420 Fast Buds the smart way

  1. Start in a final pot of 18–27 L (4.76–7.14 gal) to avoid transplant stress
  2. Use well-draining soil or coco with good aeration for strong roots
  3. Keep light at 18–20 hours daily — no switching required
  4. Water when the top inch of soil feels dry; don’t overwater
  5. Apply mild nutrients early, increasing slightly in mid-flower
  6. Use low-stress training (LST) to open up the canopy
  7. Monitor for pests, but expect strong natural resistance
  8. Harvest when trichomes turn milky to amber for your preferred effect

Why growing C4-Matic just feels right

  • More confidence with every grow — no more guessing games
  • Less anxiety about mold, bugs or failed harvests
  • Enjoy a reliable routine that fits your life
  • Share top-shelf buds without the grower ego
  • Feel proud of a plant that looks and performs like a pro’s
  • Better coexistence — quiet, compact, and discreet

Technical specifications

  • Breeder / Brand: FastBuds
  • Type: Autoflowering
  • Dominance: Hybrid (balanced indica-sativa)
  • Genetics: Skunk × White Widow × Big Bud × Ruderalis
  • Autos: 7–8 weeks from seed to harvest
  • Indoor yield: 450–550 g/m² (1.6–1.9 oz/ft²)
  • Outdoor yield: 50–150 g/plant (1.76–5.29 oz/plant)
  • Indoor height: 80–110 cm (2.62–3.61 ft)
  • Outdoor height: 100–120 cm (3.28–3.94 ft)
  • Difficulty: Low
  • Structure and vigour: Dense branching, short internodes, moderate stretch
  • Ideal climate: Temperate, Mediterranean; tolerates humidity and temperature swings
  • Resistance: High resistance to mold, pests and water stress
  • Training: Suitable for LST; avoid topping or FIM
  • Recommended pot: 18–27 L final pot
  • Light: 18–20 h daily throughout the cycle
  • Temperature: 22–26 °C (veg), 20–25 °C (flowering)
  • Humidity: 60–70% (seedling), 50–60% (veg), 40–50% (flowering)
  • pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
  • Smell in grow: Medium to high — use carbon filter if needed
  • THC: approx. 15–18%
  • Aromatic profile: Fruity, citrus, skunky, earthy (limonene, myrcene, caryophyllene)
  • Flavour: Sweet citrus, creamy, peppery, incense-like aftertaste
  • Effect: Balanced cerebral and physical — uplifting, relaxing, long-lasting (up to 2 hours), great for stress relief and mood enhancement

How to grow C4-Matic 420 Fast Buds

Fast, forgiving, and built for results — here’s how to get the most from your C4-Matic.

Quick overview: autoflowering · FastBuds · 7–8 week cycle · low difficulty · ideal for indoor tents or discreet outdoor setups.

Safe start: Germinate seeds at 22–25 °C with high humidity. Transplant once the radicle is ~1 cm long. For a stronger root foundation, Clonex Mist boosts early development and reduces shock.

Stable seedling: Keep lights 40–50 cm (15.75–19.69 in) above canopy. Water lightly and let soil dry slightly between irrigations. Introduce mild nutrients after week 2. Cannazym improves root health and nutrient uptake in any medium.

Directed growth: Maintain 18–20 hours of light daily. Use LST to spread branches and maximize light exposure. Feed with balanced nutrients, increasing slightly in mid-flower. A well-aerated mix like Autoflower SuperMix supports steady growth without overfeeding.

Efficient flowering: Lower humidity to 40–50% to prevent mold. Ensure good airflow and support heavy colas if needed. No topping — let the Ruderalis genetics do their thing.

Harvest, drying and curing: Harvest when trichomes are mostly milky with some amber for a balanced effect. Flush 7–10 days before harvest. Dry at 18–22 °C and 50–60% RH for 10–14 days, then cure in jars for 2–4 weeks, burping daily.

Frequently Asked Questions

Is C4-Matic good for beginners?

Yes — it’s one of the easiest autoflowers to grow, with high resistance to stress, pests and mold. Just keep a consistent light schedule and avoid overwatering.

Does it smell strong during flowering?

Yes, it has a medium to high odor — fruity, skunky and earthy. Use a carbon filter indoors to stay discreet.

Can I grow it outdoors in a rainy climate?

Absolutely. Its mold resistance makes it a solid choice for humid or unpredictable weather, especially in Mediterranean or temperate zones.

How much yield can I expect indoors?

Under good LED lighting, expect 450–550 g/m² (1.6–1.9 oz/ft²) in just 7–8 weeks — impressive for an auto.

Should I top or prune C4-Matic?

No — avoid topping, FIM or aggressive pruning. Use low-stress training (LST) instead to shape the plant without slowing growth.

Personal Experience of Pevgrow’s CEO (Alan)

I grew C4-Matic in my balcony tent last summer, and it was a no-brainer. I didn’t touch it for two weeks while traveling — came back to a healthy, thriving plant. No pests, no mold, just dense, frosty buds. I used LST early on to spread the canopy, and I fed it lightly with a simple coco mix. The high is smooth — uplifting at first, then gently relaxing. Perfect for unwinding after work without knocking me out. I keep a jar curing right now, and the aroma? Pure citrus with a skunky punch. If you want a strain that grows itself and still delivers top-tier quality, this is it.

Type: Type Autoflowering
Banks: Banks FastBuds
Genetics: Genetics White Widow x Skunk x Big Bud x Ruderalis
Indoor production: Indoor production 450-550 gr/m2
Outdoor production: Outdoor production 50-350 gr / plant
Outdoor height: Outdoor height 1m
Crop cycle since germination: Crop cycle since germination 8 weeks
THC: THC 19%
CBD: CBD 1.1%


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Comments|Questions C4-Matic 420 Fast Buds Autoflowering Seeds · FastBuds · High-Yielding, Easy-Growing Hybrid: 1 - Average Rating: 4/5

Customer reviews C4-Matic 420 Fast Buds Autoflowering Seeds · FastBuds · High-Yielding, Easy-Growing Hybrid

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Dr_Greybeard - Verified buyer
07/18/2020 Plovdiv, Bulgaria
Climate question

How well will this C4 do in a hot outdoor summer climate like Dallas TX? (100° days/80° nights)

Answer:
Hello, in principle watering it when necessary should not be any problem, greetings.
  • 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)
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    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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