
Sugar Black Rose Feminised
Sugar Black Rose Feminised seeds. A indica cultivar at 18% THC delivering relaxed, sleepy, happy. Grow figures from named sources.
Royal King Genetics β first-party test batch
Figures below are from our internal seed-lot QC and verified UK grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-08 on 300 seeds.
About Sugar Black Rose Feminised
Will Sugar Black Rose finish outdoors in Britain? Yes, within the April to October season. The habit is compact enough to stay below a fence line, and the dense flower structure puts real weight on a small frame β which is also the reason airflow matters more here than it would in a drier place. Flowering runs 50 to 55 days, which puts harvest in September or October for most of the country.
What yield is realistic? 450 g/m2 indoors is achievable with competent LED lighting and attention to feeding. Outdoors, 900 g/plant is realistic in 50 litre pots or in prepared ground with full sun β and "full sun" is doing a lot of work in that sentence at these latitudes, so the position you pick in the garden matters more than the pot you buy. At 18% THC with a myrcene-forward profile, the return on the effort is sound.
Is it forgiving? Reasonably. Anyone comfortable with pH, a feed schedule and a light timer will get a good result. It will not hold your hand, but it will not punish one missed watering either.
Further questions we get asked about Sugar Black Rose
Which medium? For flavour, peat-free soil cut with about 30% perlite and amended slowly β fish, blood and bone, rock phosphate, seaweed meal, all of it available at any British garden centre. For weight, coco with fertigation at EC 1.4-1.8 through bloom. This indica performs in both; the choice is about what you want out of it.
How does it handle a British summer? The dense foliage shades itself, which helps. Above 30Β°C growth stalls but the plant does not fold. Mulch the root zone and water before seven in the morning and heat stress stops being a factor in nearly every part of the country. The more common British problem is the opposite one: a cold, wet July that never lets the plant dry out between waterings.
When do I switch to bloom feed? Inside the first week of visible pistils. The 88/12 balance shifts its demand quickly at the transition β phosphorus and potassium up, nitrogen down. Soil growers can top-dress with guano and sulphate of potash; coco and hydro should move to a low-nitrogen bloom formula straight away.
Indoors or outdoors? Both work, for different reasons. Indoors you own the flowering environment completely. Outdoors, across the April to October season, the plant gets a light intensity no domestic LED matches and can reach 900 g/plant β at the price of accepting whatever the autumn does. Flowering: 50 to 55 days. Indoor yield: 450 g/m2. Outdoor yield: 900 g/plant. Rated intermediate difficulty.
What Sugar Black Rose is actually like
Growers report relaxed, sleepy, happy as the defining characteristics and our own notes agree. At 18% THC this indica sits where dose control starts to matter. A single bowl through a vaporiser at 185Β°C gives a manageable physical ease with the head still working, which is what most people want at the end of a day. Push the dose and it moves firmly towards sedation β the reason it tends to become a winter evening cultivar rather than an all-year one. The Myrcene/Humulene pairing leaves earth and faint sweetness on the palate, with fruit at the end.
Best suited to quiet evenings, a film, recovery after exercise, and the hour before sleep.
Terpene breakdown
Primary: Myrcene Β· Secondary: Humulene Β· Tertiary: Linalool. How this profile survives the journey from flower to vapour depends on temperature. Low vaporisation, 180-188Β°C, keeps the humulene and linalool audible over the myrcene base. Run it hotter, or burn it, and the three collapse into one note β pleasant enough, but none of the complexity that made it worth choosing.
Who it suits
Sugar Black Rose suits growers with the basics in place. Understand pH, rough nutrient ratios and light cycles before you commit to it; it asks for competence rather than expertise. Photoperiod genetics leave plant size and harvest date under your control β veg longer for bigger plants, or flip early when space is short. The April to October season accommodates a bloom of 50 to 55 days comfortably for outdoor growers across the country.
Effects
Strain Type
Strain Data Sheet
Packaging
Feminised Premium
Seeds
authenticity
lining
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Sugar Black Rose Feminised β Breeder Information
Royal King GeneticsBred and stabilised 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 the full breeding process and about page.
Sugar Black Rose carries clone-derived parents from the 2010s production. We backcrossed twice to the dominant parent (BX2) to weld cut-specific traits into seed-stable form. Vigour and bud-to-leaf ratio run uniform across the population.
Carry a clone-derived 2010s production hybrid through to a stable seed pack.
Chosen for trichome coverage, stout structure and consistent flowering time across the pack.
Royal King Genetics breeding facility β pollen from internally selected sibling males of the recurrent parent.