Jager cannabis seeds packaging — Royal King Seeds the UK
IndicaAuto
THC 20%
😊 Beginner Pick
IndicaAutoflowerIn Stock

Jager Auto

AutoflowerSee Lab Report →

Grow Jager Auto in the UK. Indica genetics at 20% THC, known for creative, happy, relaxed effects.

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About Jager Auto

Can I grow Jager outdoors in the UK? Absolutely. This 70/20 indica is well-suited to the UK outdoor season running April through October. The compact growth habit means it will not tower above your fence line, and the dense flower structure packs serious weight into a manageable frame. Flowering takes 50-60 days, placing your harvest window squarely in September or October for most UK latitudes.

What kind of yield should I realistically expect? Indoor growers pulling up to 350 g/m2 is achievable with decent LED lighting and attentive feeding. Outdoors, up to 400 g/plant per plant is realistic in 50+ litre pots or directly in prepared garden soil with full sun exposure. At 20% THC and a caryophyllene-forward terpene profile, the quality-to-effort ratio makes Jager genuinely worthwhile.

Is this strain forgiving for newer growers? Reasonably so. A grower with basic knowledge of pH, feeding schedules, and light cycles will manage fine. It is not the most forgiving plant if you neglect it entirely, but it will not collapse at the first missed watering either.

More Questions UK Growers Ask About Jager

What growing medium works best for this strain? For maximum flavour complexity, organic soil blended with 30% perlite and enriched with slow-release amendments (blood, fish and bone, rock phosphate, kelp meal — all readily available at a garden centre or your local hydroponics shop). For maximum yield, coco coir with automated fertigation at EC 1.4-1.8 during bloom. Both approaches produce excellent results with this indica genetics.

How does it handle British summer heat? The dense foliage provides natural self-shading, which helps. In a UK heatwave above 30°C, growth slows noticeably but the plant does not collapse. Mulching the root zone and watering in the early morning (before 7am) prevents heat stress in most UK locations.

When should I start feeding bloom nutrients? Within the first week of visible pistil formation. This cultivar's 70/20 genetics shifts its nutritional demand rapidly at the transition. Phosphorus and potassium uptake increases noticeably, whilst nitrogen demand drops. An organic top-dress of bat guano and sulphate of potash works well for soil growers; hydro and coco growers should switch to a bloom-ratio formula (low N, high PK) immediately.

Indoor or outdoor — which is better for this strain? Both work. Indoor gives you control over the 50-60 days environment. Outdoor in the UK growing season (April-October) lets the plant reach its full up to 400 g/plant potential with natural sunlight intensity that even expensive LEDs struggle to match. Flowering: 50-60 days. Indoor yield: up to 350 g/m2. Outdoor yield: up to 400 g/plant. Rated intermediate difficulty.

Flavour, Aroma, and Experience

The sensory arc of Jager unfolds in stages. Initial inhalation at 20% THC brings a warm peppery spice that tingles at the back of the throat. The creative, happy, relaxed effects emerge within minutes, beginning as a pleasant heaviness behind the eyes that migrates downward through the shoulders, chest, and limbs. By the fifteen-minute mark, a deep physical stillness sets in — not sedation exactly, but a reluctance to move that makes the couch remarkably appealing. Duration runs 2-3 hours at moderate doses. The myrcene secondary terpene adds a distinct layer: additional body depth that reinforces the physical dimension.

Terpene Breakdown

Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Bisabolol. Together these three compounds construct an aromatic signature that evolves throughout the curing process. Freshly dried flower leads with caryophyllene presence, but after three to four weeks in sealed glass jars at 16-18°C, the bisabolol undertone strengthens and the overall bouquet develops a layered complexity. Vaporisation between 180°C and 195°C captures the broadest spectrum of these terpenes — higher temperatures degrade the more volatile bisabolol molecules first.

Suitability and Recommendations

Who grows Jager successfully? Balcony growers in flats from Brighton to Glasgow. Regional cultivators wanting a quick-turnaround outdoor crop. Indoor growers with limited headroom in small tents. The autoflowering genetics run on their own internal clock — no light schedule adjustments, no stress about light leaks, and harvest arrives 10-12 weeks after germination regardless of the season. Difficulty is rated intermediate, meaning a moderate learning curve that rewards attention without demanding laboratory-grade conditions. Delivered UK-wide in discreet, unbranded packaging with germination guarantee included.

Effects

🤩Creative
77% of people reported feeling Creative
😊Happy
65% of people reported feeling Happy
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
🤤Hungry
48% of people reported feeling Hungry
🤗Euphoric
40% of people reported feeling Euphoric
🧘Calm
33% of people reported feeling Calm
🌿Stress Relief
20% of people reported feeling Stress Relief
💆Body High
17% of people reported feeling Body High

Strain Type

Indica 70%Sativa 20%

Strain Data Sheet

🧬THC20% - 25% (High)
🌿LineageAutoflowering Indica-Dominant Hybrid (Undisclosed Lineage)
🔬TypeAutoflower Indica
🌡ClimateAll climates (adaptable)
📅Harvest≈ 10 – 11 weeks from seed (typical)
📏Height60 – 100 cm (typical)
⚖️YieldMedium
🏠Yield Indoorup to 350 g/m2
🌳Yield Outdoorup to 400 g/plant
Flowering Time50-60 days

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers must comply with all applicable UK Commonwealth, state, and territory legislation.
1
Jager Auto
royalkingseeds.co.uk
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Jager Auto — Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics — 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.

Stabilisation Level
F5
Generations
5+
Breeding Programme
Autoflower Stabilisation (F5) — ruderalis trait fixing
Stabilisation Notes — What This Means for Your Grow

Jager is an autoflowering line that has been progressed through five rounds of Royal King Genetics autoflower stabilisation. The autoflower trait is recessive — fixing it takes multi-generation work — and at F5 the auto trigger and finish window are welded across the pack.

Breeding Goal

Lock the autoflower trait in Jager through five generations of selection.

Selection Focus

Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
7 January 2026· 99%+ germination