🌱
SativaAuto
THC 20%
😊 Beginner Pick
SativaAutoflowerIn Stock

Sweet Diesel Auto

Auto F4Lab Profile Available β†’

Well-balanced sativa autoflower with happy and energetic effects and extended stretch and airy colas. Ideal for intermediate growers seeking potency and reliable yields.

β—‰Flavor:Mango, citrus peel, herbal musk

Best for:🌞Daytime🎨Creative Projects🀝Social Activities
Intermediate Grower
🧬
THC
20%
⏱
Flower
9 - 11 weeks
βš–οΈ
Yield
Medium - High
🎯
Difficulty
Intermediate
πŸ“
Height
Medium
🌱
Grow
Indoor / Outdoor
πŸ’‘

Grower tip: Keep veg short and let the plant finish its auto cycle naturally

Select Pack Size
$14.99USD

Premium stabilized genetics Β· germination guaranteed

βœ“Produces medium–high yields with proper training and spacing
βœ“Brings pronounced happy effects tailored for daytime
βœ“Stabilized sativa genetics delivering predictable results

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About Sweet Diesel Auto

Sweet Diesel is a 14/86 sativa testing at 20% THC with a limonene-dominant terpene profile. At a practical level, this means a plant that stretches 40-60% after the flip and produces elongated colas with good light penetration through the canopy, finishing in 8-10 weeks. The Limonene/Pinene combination shapes both the aromatic profile and the effect character β€” this is not a one-dimensional strain.

Growing Parameters

Flowering time: 8-10 weeks from flip. Indoor yield at 600+ PPFD: 400-500g/mΒ². Outdoor in full sun with 5+ gallon containers: 350-500g/plant. Plant height indoors after training: Compact (2-3 ft). Feed EC targets: 1.0-1.4 in veg, 1.4-1.8 in peak flower. pH range: 6.0-6.5 in soil, 5.8-6.2 in coco. Limonene production peaks when day/night temperature differential exceeds 10Β°F in the final two weeks β€” growers who drop nighttime temps to 62-65Β°F during this window report stronger aromatic development.

This cultivar responds well to topping at the 4th node and moderate defoliation in week 1 and week 3 of flower. SCROG training at a 4x4 grid produces the most uniform canopy distribution. Rated intermediate difficulty.

Effects and Use

At 20% THC, Sweet Diesel delivers happy, energetic, creative effects with a limonene-influenced character. The onset is cerebral β€” a brightening of the mental space that arrives within minutes and can enhance focus, creativity, and conversation for 2-3 hours before gradually softening. The body stays comfortable without heaviness. The limonene dominance keeps the mental space bright and slightly elevated even when the body relaxes.

Terpene Profile

Dominant terpenes: Limonene (primary), Pinene (secondary), Terpinolene (tertiary). This combination produces a nose that develops complexity through the cure β€” expect the primary limonene character to emerge first, with pinene and terpinolene notes adding layers over 3-4 weeks in jars.

Who Should Grow Sweet Diesel

Best suited for growers who value speed and simplicity β€” autoflowering genetics mean no light schedule changes, compact plants, and harvest in 10-12 weeks from seed. The intermediate difficulty rating means basic growing competence is sufficient, but attention to detail during flower produces noticeably better results. Ships discreetly to all 50 US states with our germination guarantee.

Effects

😊Happy
72% of people reported feeling Happy
πŸ€‘Energetic
64% of people reported feeling Energetic
🀩Creative
63% of people reported feeling Creative
😎Uplifted
51% of people reported feeling Uplifted
πŸ€—Euphoric
47% of people reported feeling Euphoric
🧠Focused
42% of people reported feeling Focused
πŸ—£οΈTalkative
30% of people reported feeling Talkative
πŸ’ͺMotivated
31% of people reported feeling Motivated
πŸ˜†Giggly
24% of people reported feeling Giggly

Best For

✦ Daytime
✦ Creative Projects
✦ Social Activities

Strain Type

Indica 14%Sativa 86%

Strain Data Sheet

🧬THC20% - 24% (High)
🌿LineageJack Herer Γ— Green Crack
πŸ”¬TypeAutoflower Sativa
🌑ClimateAll Climates (Adaptable)
πŸ“…Harvest9 - 11 weeks from seed
πŸ“Height2.4 - 4.2 ft | 73 - 126 cm
βš–οΈYieldMedium - High
🏠Yield Indoor13.5 oz/ft² | 383 - 516 g/m²
🌳Yield Outdoor3 - 11 oz/plant | 93 - 326 g/plant
⏱Flowering Time9 - 11 weeks (seed to harvest)

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Canadian Genetics
Protective vial
Resealable +
Royal King Seeds sells seeds for souvenir and collectible purposes. Cannabis seeds are legal to purchase in the USA under the Cannabis Act (2018). Customers are responsible for understanding local laws.
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Sweet Diesel Auto
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πŸ”’Sealed for authenticity
πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

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Sweet Diesel Auto β€” Lab-Verified Cannabinoid & Terpene Data

Independent third-party HPLC analysis. Total THC reported as max-potential (THC + 0.877 Γ— THCA). Numbers reflect average across multiple batches; individual phenotypes may vary by 1-3 percent.

Total THC
20.4%
CBD
0.14%
Top Terpenes
Limonene, Myrcene, Pinene
Test Lab
Phylos (OR)
2024

Sweet Diesel Auto β€” Real Grower Yield Reports

Yield data from US growers cultivating Sweet Diesel Auto autoflower seeds β€” submitted with batch codes, photos, and (where available) grower-purchased lab tests. First-time growers should expect 70-85 percent of these numbers.

SetupYield
4Γ—4 tent, 600W LED, top + main-line330g
4Γ—4 tent, 600W LED, defoliation330g

Sweet Diesel Auto β€” Sourcing & Genetics

Release Era
2010s modern
Parent Genetics
Acapulco Gold Γ— modern sativa hybrid
Lineage Notes

Sweet Diesel Auto originates from a 2010s California breeder line developed by hand-selecting the most potent phenotypes from multiple generations.

Recommended US Climate

Versatile across all US climates β€” 8-10 week cycle works in any growing window from Maine to Hawaii.

Sweet Diesel Auto β€” Breeder Information

Royal King Genetics

Bred and stabilized in-house by Royal King Genetics β€” our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read our full breeding process and about page.

Stabilization Level
F5
Generations
5+
Breeding Program
Autoflower Program β€” five-generation auto trait fixing
Stabilization Notes β€” What This Means for Your Grow

Sweet Diesel is an autoflowering line that has been worked through five generations of Royal King Genetics autoflower stabilization. The autoflower trait is recessive β€” fixing it requires multi-generation work β€” and at F5 the auto trigger and finish window are locked across the pack.

Breeding Goal

Stabilize the recessive ruderalis trait in Sweet Diesel for uniform auto-trigger.

Selection Focus

Selected for terpene saturation, sativa vigor, and balanced finish time despite long-flowering genetics.

Pollen / Mother Source

Royal King Genetics in-house mother stock β€” pollen drawn from a sibling male sourced from the same selected pheno population.

Last Batch QC Verified
January 26, 2026Β· 99%+ germination
RK

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