
Diesel Duff Feminised
Buy Diesel Duff Feminised seeds in South Africa. Sativa · 17% THC · happy, energetic, creative. Every figure on this page is sourced, and every order ships unbranded.
Royal King Genetics — Seed-Lot Testing
Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-02-04 on 325 seeds.
About Diesel Duff Feminised
Days 1 to 14, seed to fourth node: Expect Diesel Duff to crack in roughly 48 hours on damp paper towel and to break soil by day three. Early growth runs upward quickly, narrow first leaves already reaching. Look for five nodes by day 14 with obvious gaps between them, which is the sativa pattern showing early. Damping off is rare if you hold near 70% humidity through this stage.
Weeks 3 to 6, building the frame: This is the point where it tries to get away from you. Start low-stress training in week three, bend the main stem over at 90 degrees in week four, and the secondaries will draw level for a flat canopy by week six without topping at all.
Bloom, weeks 1 to 70: The 21/79 character becomes obvious here. Limonene usually shows in week three and strengthens from there, with trichome cover visible without a loupe from about week five. Indoor yield: up to 450 g/m2. Height: Medium (150-245 cm). Tested at 17% THC. Difficulty: moderate.
Bloom Through to Jar
Weeks 4 to 6. This is where the plant stops looking like a frame and starts looking like a crop. Buds keep extending lengthwise rather than filling out, stacking fresh calyxes along the stems. Secondary branches often out-produce expectations here, since the open frame lets light down to sites a denser plant would simply have covered.
Weeks 68 to 70, ripening. Drop to plain water for the final ten days. The limonene carry gets strong enough that carbon filtration stops being optional in a residential street. Trichomes run clear to milky across the last fortnight, amber showing on sugar leaves before it reaches the calyxes; around 15% amber on the calyxes themselves is a common place to cut.
Drying and curing. Whole-plant hang in the dark at 17°C and 58% humidity for roughly 12 days — when stems snap instead of bending, it is ready for glass. Burp twice daily for the first fortnight, then once daily through weeks three and four. Finished weight should land near the up to 450 g/m2 estimate. The terpinolene note comes through markedly stronger after curing than it did at harvest, which is the clearest evidence that a cure builds flavour rather than merely preserving it.
Difficulty: moderate. In flower for 60-70 days. Stands Medium (150-245 cm). Indoors it returns up to 450 g/m2. Outdoors, up to 450 g/plant a plant. Feminised seeds.
What Diesel Duff Is Like to Use
The effects most commonly reported for this cultivar are happy, energetic, creative. At 17% THC it sits in a bracket where there is a usable working range. Vaporised between 175°C and 185°C it lifts mood and mental energy in a way that suits creative work, a hike, or a long afternoon around a braai. The body stays light, so for anyone with a THC tolerance it holds up as a daytime option. The Limonene/Terpinolene pairing leaves a zesty, clean aftertaste on the palate.
Where it fits: creative work, company, being outdoors, and unstructured daytime hours.
The Aromatic Three
Leading with Limonene, then Terpinolene, and Pinene underneath. Read across a cure, these three compounds do not stay in the same order. Fresh off the dry, limonene leads. After three or four weeks in sealed glass at 16-18°C the pinene undertone comes up and the bouquet gains a layer it did not have at harvest. Vaporising between 180°C and 195°C captures the widest span of them — run it hotter and the volatile pinene molecules are the first thing you lose.
Suitability and Recommendations
Diesel Duff is a reasonable fit for growers with the basics already in place. Understand pH, know roughly what nutrient ratios do, and be able to hold a light cycle — it will not carry you, but it does not punish the occasional slip either. Photoperiod genetics leave size and timing in your hands — hold it in veg for a bigger plant, or flip early when headroom is the constraint. A September-to-May outdoor season comfortably covers a 60-70 days bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.
Effects
Reach For It When
Strain Type
At a Glance
In the Packet
Feminised Premium
Seeds
the source
inside
number
Related Strains

Orange Crush Feminised
Buy Orange Crush Feminised seeds in South Africa. Sativa · 20% THC · creative, energetic, happy. Every figure on this page is sourced, and every order ships unbranded.

Jack the Ripper Feminised
Jack the Ripper Feminised for South African growers — sativa genetics at 18% THC, reported as creative, energetic, happy. Sourced grow figures on the page, plain packaging, delivered nationwide.

Power Plant Feminised
Power Plant Feminised: sativa cannabis seeds picked for South African conditions. 19% THC, with happy, energetic, creative the effects most often reported. Posted discreetly countrywide.

Alpha Blue Feminised
A sativa testing at 20% THC, Alpha Blue Feminised is reported happy, energetic, creative. Grown right across the country, from the Cape to the Lowveld. Discreet nationwide delivery and a germination guarantee.
Diesel Duff Feminised — Breeder Information
Royal King GeneticsRecreated and stabilised by Royal King Genetics , the breeding team behind this catalogue. Seed lots are germination-tested before they ship. More on the breeding process and about page.
A 2010s production cross stabilised over four generations of selection. Diesel Duff grows true-to-type with the sativa vigour that defines the cultivar.
Cull off-type phenos in Diesel Duff through filial selection.
Chosen for trichome density, sativa branching architecture and an energising terpene expression.
Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.