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Auto Dark Devil by Sweet Seeds – Fast, Colorful & Resinous Autoflowering Strain
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Auto Dark Devil by Sweet Seeds delivers stunning purple hues, a sweet-fruity aroma with incense notes, and a balanced psychoactive-relaxing effect. Ready in just 8.5 weeks, this easy-to-grow autoflower produces up to 600 g/m² indoors. Perfect for growers seeking beauty, flavor, and potency without the wait.
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- Description
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Auto Dark Devil by Sweet Seeds is a vibrant, fast-flowering autoflower that turns heads with its rich purple tones and coats everything in glistening resin—ready in just 8½ weeks from seed to harvest.
Worried your grow won’t stand out?
You want your plants to impress—not just with yield, but with beauty, aroma, and smooth effects. But too often, autos deliver bland buds, weak flavors, or disappointing colors.
Why settle for green when you can grow purple?
Without the right genetics, your plants stay ordinary. No visual drama. No aromatic depth. No head-turning trichome coverage. You end up with forgettable harvests that don’t match the hype.
Auto Dark Devil turns your grow into a showstopper
This 4th-generation autoflower from Sweet Seeds combines speed with spectacle. With 95% of plants developing deep purple and reddish hues—especially at the end of flowering—you’re not just growing cannabis, you’re cultivating art. The sweet, fruity aroma with citrus and incense notes fills the room, while the balanced 15–20% THC and 0.9% CBD deliver a stimulating yet soothing experience.
More than just a pretty plant
- Thrives in small spaces with a compact, bushy structure
- Produces up to 600 grams per square meter indoors
- Yields 50–200 grams per plant outdoors under full sun
- Reaches 0.80–1.30 m (2.62–4.27 ft) depending on conditions
- Develops dense, resin-heavy buds in just 8.5 weeks
Control every stage of your grow
- Start strong with a vigorous germination rate
- Grow under 18–20 hours of light for maximum yield
- Use well-aerated soil or coco for optimal root development
- Feed with balanced nutrients—avoid overfeeding in early stages
- Support branches if needed during peak flowering
How to grow Auto Dark Devil successfully
For a strong start, germinate seeds in a moist, dark environment at 22–25 °C. Transplant carefully once the taproot appears.
- Use a final pot of 18–27 L early to avoid stress
- Maintain pH between 6.0–6.5 (soil) or 5.8–6.2 (coco)
- Keep humidity at 60–70% in seedling, 50–60% in veg
- Lower RH to 40–50% in flowering to prevent mold
- Harvest when trichomes turn mostly cloudy for a zippy high
Benefits of a flawless harvest
- Consistent, colorful buds that impress every time
- Smooth, flavorful smoke with incense and citrus notes
- Reliable yields even for beginner growers
- Discreet height perfect for stealth grows
- Fast turnaround lets you grow more cycles per year
Technical specifications
- Breeder / Brand: Sweet Seeds
- Type: Autoflowering
- Dominance: Sativa-dominant hybrid (55% sativa, 40.3% indica, 4.7% ruderalis)
- Genetics: Big Devil XL Auto × Hindu Kush Auto (Chitral region)
- Life cycle: 8.5 weeks from germination to harvest
- Indoor yield: 400–600 g/m² (14.1–21.2 oz/ft²)
- Outdoor yield: 50–200 g/plant (1.76–7.05 oz/plant)
- Height: 80–130 cm (31.50–51.18 in)
- THC: 15–20%
- CBD: 0.9%
- Difficulty: Low to medium
- Flavor: Sweet, fruity, citrus, incense, woody
- Effect: Balanced – cerebral stimulation with physical relaxation
How to grow Auto Dark Devil: expert tips
Auto Dark Devil is ideal for beginners and space-limited growers. Its compact size and rapid cycle make it perfect for indoor tents or balcony grows.
Quick overview: Autoflowering · Sweet Seeds · 8.5-week cycle · Low to medium difficulty · Ideal for indoor or outdoor in temperate to Mediterranean climates.
Safe start: Germinate in a damp paper towel or starter cube. For faster rooting and less stress, Start Up Plagron boosts early development.
Directed growth: Use 18–20 hours of light daily. Keep substrate well-drained—BN Soil provides excellent aeration and natural nutrient balance.
Efficient flowering: Avoid topping or aggressive pruning. In mid-flower, Bloombastic Soil Box ATA enhances resin and bud density without overfeeding.
Harvest and refinement: Harvest when trichomes are mostly cloudy for a clear, energetic high. Flush 7–10 days before harvest. Dry at 18–22 °C and 50–60% RH, then cure for 2–4 weeks.
Frequently Asked Questions
Does Auto Dark Devil really turn purple?
Yes—approximately 95% of plants develop striking purple and reddish hues, especially in the final weeks of flowering when temperatures drop slightly at night.
Is this strain good for beginners?
Absolutely. It’s forgiving, fast, and doesn’t require advanced techniques. Just keep light, water, and nutrients balanced.
How much yield can I expect indoors?
Under optimal conditions, you can harvest 400–600 grams per square meter—especially with good lighting and airflow.
Can I grow it outdoors in colder climates?
Yes, it’s resilient to mild temperature drops, but performs best in warm, sunny environments. Avoid prolonged rain during flowering.
Does it smell strong during flowering?
It has a moderate to strong aroma. If discretion is key, use a carbon filter—especially in enclosed spaces.
Personal Experience of Pevgrow’s CEO (Alan)
I grew Auto Dark Devil in my small balcony setup under a 200W LED and 20L pots. What blew me away was the color—deep purple calyxes and fiery orange pistils. I didn’t expect such visual drama from an auto. I used a simple organic soil mix and avoided any training. The plant stayed under 1.10 m (3.61 ft), perfect for stealth. Harvest came at week 8.5, and the flavor was incredible—sweet citrus up front, then a spicy incense finish. The high? Uplifting but grounded. I used it during the day without anxiety. If you want beauty, speed, and balance, this one’s a no-brainer.
| Type: |  |
Autoflowering |
| Banks: |  |
Sweet Seeds |
| Genetics: |  |
Afghani Big Devil XL x Hindu Kush Auto |
| Phenotype: |  |
Indica: 40,3% / Sativa: 55% / Ruderalis: 4,7% |
| Indoor production: |  |
400-600 g/m2 |
| Outdoor production: |  |
50-200 g / plant |
| Indoor height: |  |
100-120 cm |
| Outdoor height: |  |
80-130 cm |
| Crop cycle since germination: |  |
11 weeks |
| Features: |  |
Indica seeds Sativa seeds |
| Weather: |  |
Cold climates Sunny / Mediterranean |
| Effects: |  |
Creativity Relaxing |
| THC: |  |
16% |
| CBD: |  |
0.8% |
| Flavor and aroma: |  |
Fruity |
Customer questions Auto Dark Devil
Sweet seeds make nice buds; I have been very happy with two of their products in auto; very good. I like the Indian on the picture too; some curry ingredients are very high in nutrients.
Answer:
Thanks ;)
Thanks ;)
Hi I know you guys have nothing to do with Herbie's but I was wondering if you have the same sweet seeds promotion say do I already know you do the 3 + 1 and 5 + 2 What do you also have the promotion that adds an extra seed to your cart On top of that for each pack of sweet seeds bought, It was a choice out of 3 different kinds of sweet seeds dark devil being one of them caramel cream being another and I forget the 3rd
I just want to know because I'm about to make an order And I wanna know if I should add this kind to my car or if I can get them in their promotion so I can grab another kind ofbsweet seeds i want to try. Thank you very much!
Answer:
Hi Joseph! All Sweet Seeds packages include 3+1 and 5+2 promotion Cordialement
Hi Joseph! All Sweet Seeds packages include 3+1 and 5+2 promotion Cordialement
j aimerais tester cette varietee j ai un ami qui en a fais super top
Customer reviews Auto Dark Devil
Dark ** is a unique and enjoyable strain. Most of them get the purple, and the effects are lovely, energizing, psychedelic.
Très belle plante bon rendement
Très bonne weed je recommande
Can?t say anything bad about Dark *** yet. Germinated 3 seeds, really vigorous. Tap roots 12 hrs later, seedlings out of the dirt in 36. So far so good!
bien germer, hate de voir la suite
Great
Pretty purple buds mmmmm
When I smoked one joint I was like god more than like devil hahaha very very good!
When I smoked one joint I was like god more than like devil hahaha really good!
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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.
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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.
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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.
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How long does it take to ship my order?
In 24/48 hours we will ship your order.
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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.
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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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is the auto dark devil seed is good for first time grower
Hi! It's an incredible strain, I'm sure you'll like it. In the short period of growth and flowering is easy to grow. Regards