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Harlequin 1:18 CBD Seeds
Harlequin 1:18 is a CBD-dominant strain with THC held to 1% on the strain label. It comes from Colombian Gold, Thai and Swiss landrace genetics, and the buds carry a musky, earthy nose with tropical fruit underneath. Plants grow even and uniform, which makes a small tent easy to fill.
- 1% THC, CBD-dominant
- 8 to 10 weeks of flowering
- About 400 g per plant outdoors
Shipping is $10, free over $99. Orders over $100 get 10 free seeds, and orders over $200 get 20. Every pack is covered by our 90% germination guarantee. Charged in USD.
ships free
20 at $200
or we replace them
the outside of the box
Harlequin is one of the best-known CBD lines, and Harlequin 1:18 CBD seeds push the ratio further. The name tells you the balance: about one part THC to eighteen parts CBD, with THC at 1% on the strain label. The genetics go back to landrace sativas, Colombian Gold crossed with Thai and Swiss lines.
Musk and tropical fruit
Harlequin's aroma is earthy and musky first, with a tropical fruit note, close to mango, coming through as the buds ripen. It is a quiet nose next to a gas strain, though the drying room will still smell.
Strain label
Harlequin 1:18 CBD Seeds · The Seed Pharm- Seed type
- CBD Seeds
- Lineage
- Colombian Gold x (Thai x Swiss landrace)
- Indica / sativa
- Sativa-dominant
- THC
- 1% THC
- CBD
- High
- Flowering time
- 8-10 weeks
- Height
- Medium (100-150 cm)
- Outdoor yield
- 400 g per plant
- Grows
- Indoor/Outdoor
How to grow Harlequin 1:18
The plants grow to a medium 100 to 150 cm and come out fairly uniform, so a small tent fills evenly. It is a forgiving strain for a first grow: steady watering, moderate feeding and good light are enough.
The sativa background shows in the narrow leaves and in some stretch once flowering begins. A single topping and a few ties keep the canopy level. The flowers are ready in 8 to 10 weeks. Outdoors, a plant in a sunny spot returns about 400 g.
Read next: How to germinate seeds · Ontario guide · BC guide
Harlequin 1:18 pack prices
| Pack | Price | Per seed | You save | Bonus seeds | Shipping |
|---|---|---|---|---|---|
| 3 seeds | $39 | $13.00 | Base price | None | $10 |
| 5 seeds | $55 | $11.00 | $10 (15%) | None | $10 |
| 10 seeds | $105 | $10.50 | $25 (19%) | 10 free | Free |
| 20 seeds | $180 | $9.00 | $80 (31%) | 10 free | Free |
Prices in USD. Savings are against the 3-seed price per seed. Bonus seeds are added at checkout once your whole order passes $100, and 20 once it passes $200.
Compare

Harlequin 1:18 CBD Seeds
Harlequin 1:18 is a CBD-dominant strain with THC held to 1% on the strain label.
From $39
Harlequin Feminized Seeds
Harlequin runs the opposite way to most of the shelf, CBD-dominant against a moderate THC figure, and that ratio is the point of the plant.
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Harlequin Kimbo Kush 1:1 CBD Seeds
Harlequin Kimbo Kush 1:1 crosses Harlequin, one of the best known CBD lines, with Kimbo Kush, and balances the two cannabinoids: CBD and THC in roughly equal measure, with 10% THC on the label.
From $39Harlequin 1:18 questions
What does 1:18 mean?
It is the ratio of THC to CBD: roughly one part THC for every eighteen parts CBD.
How much THC does Harlequin 1:18 have?
1%, as shown on the strain label, which is why the plant counts as CBD-dominant.
How is Harlequin 1:18 different from our other Harlequin seeds?
The ratio. Our other Harlequin listings carry more THC, while the 1:18 keeps it to about 1%.
Where does Harlequin come from?
Its genetics trace to Colombian Gold crossed with Thai and Swiss landrace sativas.
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