RK
Casper OG cannabis seeds packaging β€” Royal King Seeds the UK
Indica
THC 16%
🎨 Creative
IndicaFeminizedIn Stock

Casper OG Feminized

Feminized PhotoperiodSee Lab Report β†’

Grow Casper OG Feminized in the UK. Indica genetics at 16% THC, known for euphoric, uplifted, calm effects.

Select Pack Size
Β£8.94
1
πŸ‡¬πŸ‡§Free AU Delivery
🌱Germination Promise
πŸ”’Unmarked Packaging

About Casper OG Feminized

Open a jar of properly cured Casper OG and the first impression is unmistakably caryophyllene β€” a warm, peppery spice that registers almost as heat on the palate, layered with dried clove and sandalwood. Beneath this primary note, myrcene introduces a deep earthy foundation that emerges mid-palate. This 71/29 indica tests at 16% THC, but the sensory journey is what distinguishes Casper OG from other cultivars at comparable potency. Think of it like comparing a single-origin wine to a blended table variety β€” the numbers might overlap, but the experience diverges sharply.

Developing the Full Flavour Profile

Growing Casper OG for maximum terpene expression requires deliberate choices that differ from growing purely for yield. The Caryophyllene/Myrcene/Bisabolol profile responds particularly well to organic living soil β€” the microbial activity in a well-established no-till bed creates secondary metabolites that synthetic nutrients simply cannot replicate. UK growers have access to excellent local compost and worm casting suppliers that make this approach practical.

During the 63-70 days indoors period, avoid foliar sprays after week 2 β€” anything deposited on developing trichomes compromises the aromatic purity at harvest. Temperature manipulation in the final three weeks profoundly influences which terpenes dominate the cured flower: cooler night temperatures (16-18Β°C) amplify caryophyllene expression, whilst warmer finishes preserve the lighter bisabolol top notes.

The cure is where most UK growers leave flavour on the table. After a 10-14 day hang dry at 15-18Β°C and 55-60% relative humidity (a challenge in a damp British autumn β€” a climate-controlled room or wine fridge set to 16Β°C works brilliantly), transfer to glass jars and burp twice daily for the first fortnight. The myrcene secondary notes that make this strain genuinely special only emerge after 21-28 days of jar curing. Patience transforms a good flower into a remarkable one.

Flowering: 63-70 days indoors. Rated intermediate difficulty.

Flavour, Aroma, and Experience

The sensory arc of Casper OG unfolds in stages. Initial inhalation at 16% THC brings a warm peppery spice that tingles at the back of the throat. The euphoric, uplifted, calm 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 β€” 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 Β· Secondary: Myrcene Β· Tertiary: Bisabolol. Flavour translation from flower to vapour and smoke differs with this terpene combination. Low-temperature vaporisation (180-188Β°C) highlights the myrcene and bisabolol notes whilst keeping caryophyllene as a foundation. Higher temperatures or combustion flatten the profile into a single-note experience β€” still pleasant, but lacking the complexity that makes this cultivar genuinely interesting to those who appreciate flavour.

Suitability and Recommendations

Who grows Casper OG successfully? Indoor growers seeking full control over their harvest timeline. Outdoor cultivators who want to decide exactly when flowering begins. Anyone with the space and patience to vegetate this plant to its full potential before triggering bloom. 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

πŸ€—Euphoric
74% of people reported feeling Euphoric
😎Uplifted
65% of people reported feeling Uplifted
🧘Calm
60% of people reported feeling Calm
😌Relaxed
51% of people reported feeling Relaxed
😴Sleepy
52% of people reported feeling Sleepy
😊Happy
38% of people reported feeling Happy
🀀Hungry
34% of people reported feeling Hungry
🌿Stress Relief
20% of people reported feeling Stress Relief
πŸ’†Body High
17% of people reported feeling Body High

Strain Type

Indica 71%Sativa 29%

Strain Data Sheet

🧬THC16% - 21% (Medium-High)
🌿LineageGhost OG Γ— Face Off OG
πŸ”¬TypeFeminized Indica
🌑ClimateCool–temperate / continental
πŸ“…HarvestLate Sept – Oct, UK outdoor (typical)
πŸ“Height90 – 120 cm (typical)
βš–οΈYieldMedium – High
🏠Yield Indoor400 – 500 g/mΒ² (typical)
🌳Yield Outdoor400 – 600 g/plant (typical)
⏱Flowering Time63-70 days indoors

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized Premium
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
Casper OG Feminized
royalkingseeds.co.uk
IG
FB
X
πŸ”’Sealed for authenticity
πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

Related Strains

Strawberry Milkshake cannabis seeds packaging β€” Royal King Seeds the UK
Hybrid
THC 19%
πŸ“ˆ High Yield

Strawberry Milkshake Feminized

RelaxedHappyEuphoric
β–Ό
Β£9.76
Fruity Pebbles cannabis seeds packaging β€” Royal King Seeds the UK
Hybrid
THC 20%
🎨 Creative

Fruity Pebbles Feminized

UpliftedHappyRelaxed
β–Ό
Β£11.38
Jane Doe cannabis seeds packaging β€” Royal King Seeds the UK
Hybrid
THC 23%
πŸŒ™ Sleep Aid

Jane Doe Feminized

RelaxedEuphoricCalm
β–Ό
Β£10.98
Gorilla Cookies cannabis seeds packaging β€” Royal King Seeds the UK
Indica
THC 24%
🎨 Creative

Gorilla Cookies Feminized

EuphoricCreativeCalm
β–Ό
Β£11.79

Casper OG Feminized β€” Breeder Information

Royal King Genetics

Bred 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.

Stabilisation Level
BX3
Generations
4+
Breeding Programme
Royal King Genetics Backcross Line β€” BX3 clone-only restabilisation
Stabilisation Notes β€” What This Means for Your Grow

Casper OG has been the target of countless seed-bank backcross programmes. Ours is BX3 β€” three rounds of crossing the elite cut back to the parental line until trait expression evened out. The pack grows true to the mother cut.

Breeding Goal

Recreate the Casper OG clone-only cut in stable seed form.

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 β€” pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
3 February 2026Β· 99%+ germination