Jamaican High Grade by Yardie Seeds
A indica-leaning cross of Jamaica Hybrid, Jamaican High Grade — released by Yardie Seeds — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 53 days after the flip to 12/12. Reported THC is 16%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Jamaican High Grade grows against.
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Similar strains
| Breeder | Yardie Seeds |
|---|---|
| Type | indica/sativa |
| Flowering time | ±53 days |
| THC | 16% |
| Environment | Outdoors |
| Lineage | Jamaica Hybrid |
| Descendants | Jamaican Cheese, Likle Ryda |
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🧬 Explore the family: Jamaica Hybrid · Jamaican Cheese · Likle Ryda
Ancestry Pedigree
Original Strains
Growing Jamaican High Grade: what to expect
As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Jamaica Hybrid will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Jamaican High Grade FAQ
How long does Jamaican High Grade take to flower?
Jamaican High Grade typically flowers in around 53 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Jamaican High Grade an indica or a sativa?
Jamaican High Grade is listed as indica/sativa.
What are the parents of Jamaican High Grade?
Jamaican High Grade was bred from Jamaica Hybrid by Yardie Seeds.
How strong is Jamaican High Grade?
Reported THC for Jamaican High Grade is 16%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does Jamaican High Grade like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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Facts compiled from public breeder listings. Growing Jamaican High Grade? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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