Strawberry Haze cannabis seeds packaging — Royal King Seeds UK
SativaAuto
THC 15%
😊 Beginner Pick
SativaAutoflowerIn Stock

Strawberry Haze Auto

AutoflowerSee Lab Report →

Strawberry Haze Auto seeds. A sativa cultivar at 15% THC delivering focused, happy, uplifted. Grow figures from named sources.

Select Pack Size
£11.35
1
🇬🇧Free AU Delivery
🌱Germination Promise
🔒Unmarked Packaging
⚗

Royal King Genetics — 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 2026-09-03 on 300 seeds.

Germination rate: 99.4% (n=300)
Last QC test date: 2026-09-03
Indoor yield: 385-528 g/m² (avg across 17 verified grower reports)
Outdoor yield: 559-884 g/plant (avg across 8 verified grower reports)

About Strawberry Haze Auto

Will Strawberry Haze finish outdoors in Britain? Yes, within the April to October season. Expect height and expect it early; the long midsummer days at these latitudes suit the plant. Give it room to stretch and tie it down rather than fighting it. Flowering runs 80 days seed to harvest, which puts harvest in September or October for most of the country.

What yield is realistic? 600 g/m2 indoors is achievable with competent LED lighting and attention to feeding. Outdoors, 300 g/plant is realistic in 50 litre pots or in prepared ground with full sun — 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 15% THC with a limonene-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 Strawberry Haze

Which medium? For flavour, peat-free soil cut with about 30% perlite and amended slowly — 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 sativa performs in both; the choice is about what you want out of it.

How does it handle a British summer? Better than most, because the open structure lets heat out. In a genuine heatwave you may see midday droop, with recovery by evening. Thirty per cent shade netting takes the edge off without costing you much growth. 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 25/75 balance shifts its demand quickly at the transition — 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 300 g/plant — at the price of accepting whatever the autumn does. Flowering: 80 days seed to harvest. Indoor yield: 600 g/m2. Outdoor yield: 300 g/plant. Plant height: 130 cm (130 cm). Rated intermediate difficulty.

What Strawberry Haze is actually like

Growers report focused, happy, uplifted as the defining characteristics and our own notes agree. At 15% THC this sativa sits where most people find a workable window. Vaporised at 175-185°C the first effect is lift and mental energy, suited to work that benefits from it, a long walk, or an afternoon with company. The body stays light throughout, which makes it a genuine daytime option for anyone with a tolerance. The Limonene/Terpinolene pairing leaves a clean citrus finish that clears quickly.

Best suited to creative work, company, getting outdoors, and daytime use generally.

Terpene breakdown

Primary: Limonene · Secondary: Terpinolene · Tertiary: Pinene. This combination turns up often in cultivars that win things, and it is usually the one growers comment on when a jar is opened for the first time after curing. Limonene anchors the aroma, terpinolene occupies the middle, and pinene sits behind both — which is the part that separates this strain from others sharing its primary terpene.

Who it suits

Strawberry Haze 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. Autoflowering genetics take the light cycle out of the equation, which suits balcony growers, anyone working around British daylight hours, and anyone who wants the whole thing over quickly. The April to October season accommodates a bloom of 80 days seed to harvest comfortably for outdoor growers across the country.

Effects

🧠Focused
76% of people reported feeling Focused
😊Happy
65% of people reported feeling Happy
😎Uplifted
58% of people reported feeling Uplifted
🤑Energetic
50% of people reported feeling Energetic
🤩Creative
50% of people reported feeling Creative
🤗Euphoric
40% of people reported feeling Euphoric
🗣️Talkative
30% of people reported feeling Talkative
💪Motivated
31% of people reported feeling Motivated
😆Giggly
24% of people reported feeling Giggly

Strain Type

Indica 25%Sativa 75%

Strain Data Sheet

🧬THC15% - 20% (Medium-High)
🌿LineageNorthern Lights #5 × Haze × Kali Mist × Swiss Sativa
🔬TypeAutoflower Sativa
🌡ClimateAll climates (adaptable)
📅Harvest≈ 10 – 11 weeks from seed (typical)
📏Height130 cm (130 cm)
⚖️YieldHigh
🏠Yield Indoor600 g/m2
🌳Yield Outdoor300 g/plant
⏱Flowering Time80 days seed to harvest

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 United Kingdom legislation.
1
Strawberry Haze Auto
royalkingseeds.co.uk
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

Related Strains

Afghan Big Bud cannabis seeds packaging — Royal King Seeds UK
Hybrid
THC 20%
📈 High Yield

Afghan Big Bud Feminised

FocusedCalm
▼
£8.61
Puna Budder cannabis seeds packaging — Royal King Seeds UK
IndicaAuto
THC 18%
😊 Beginner Pick

Puna Budder Auto

RelaxedEuphoricCreative
▼
£10.18
Champagne Kush cannabis seeds packaging — Royal King Seeds UK
Hybrid
THC 15%
🎨 Creative

Champagne Kush Feminised

HappyTalkativeUplifted
▼
£11.35
Nightcap cannabis seeds packaging — Royal King Seeds UK
Indica
THC 22%
🌙 Sleep Aid

Nightcap Feminised

RelaxedFocusedCalm
▼
£11.74

Strawberry Haze 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 Programme — five-generation auto trait fixing
Stabilisation Notes — What This Means for Your Grow

Five generations of selection on Strawberry Haze to lock the autoflower trait. Auto trigger reliability and haze-character terps expression both run uniform across the population — no rogue photoperiod plants in the pack.

Breeding Goal

Stabilise the recessive ruderalis trait in Strawberry Haze for uniform auto-trigger.

Selection Focus

Chosen for clear-headed terpene expression, structural manageability and a finish that lands inside the published window.

Pollen / Mother Source

Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.

Last Batch QC Verified
4 September 2026· 99%+ germination