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Harlequin Seeds seed pack
FeminizedBeginnerTHC 5%Sativa Dominant

Harlequin Seeds

High-CBD, low-THC sativa that stays clear-headed

$50.15 – $143.657 pack sizes — choose at ILGM

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Our take

Harlequin is a feminized, photoperiod sativa built around an unusual ratio: roughly 7% CBD to 5% THC, drawing from Colombian Gold, Nepali Indica, Thai, and Swiss landrace genetics. That balance makes it a natural fit for growers who want an alert, focused experience without heavy intensity. Beginner-friendly and forgiving, it's a rewarding first photoperiod project.

CBD outpaces THC at approximately 7% CBD to 5% THC — one of the more distinctive cannabinoid profiles available in seed form
Flowers in 60 days indoors and is ready for outdoor harvest in early October, giving temperate-climate growers a comfortable window
Yields up to 400 g/m² indoors from feminized seeds, so virtually every plant in your space is a productive one

Grow specs

GenotypeSativa Dominant
THC5%
CBD levelHigh
EffectsEnergetic, Focused, Happy, Relaxed, Uplifted
Taste & aromaBerry, Pineapple, Skunky
Dominant terpenesCaryophyllene, Myrcene, Pinene
Grow difficultyBeginner
ClimateOutdoor, Indoor, Sunny, Continental, Mediterranean
Flowering (indoor)60 days
Harvest (outdoor)Early October
Yield potential400 gr/m²
Plant heightTall
Bud structureMedium Density, Medium Size, Large Size
Optimal temp65-80°F
Optimal humidity55-65%
LineageColombian Gold, Nepali Indica, Thai landraces, and Swiss landraces
Genetics byMr. Green

Specs are ILGM's published figures for this product; catalog and pricing last verified August 2026. Our write-up is our own — see how we make money.

Growing notes

Harlequin suits beginners growing indoors or in sunny, continental, or Mediterranean outdoor climates. Flip to a 12/12 light schedule and expect buds in about 60 days. Outdoors, plan your harvest for early October. Plants grow tall, so give them vertical room or top early to manage canopy height. Expect medium-to-large buds at medium density and yields around 400 g/m² indoors.

New to growing? Start with the complete guide, plan your gear with tent setups, and diagnose problems with troubleshoot.

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