Green Ninja by Heavyweight Seeds
Growers reach for Green Ninja as an indica-leaning option, a cross of Northern Lights × Afghani out of Heavyweight Seeds. Indoors it typically finishes flowering in around 60 days after the flip to 12/12. Reported THC is 22% with CBD at 1.0%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Green Ninja grows against.
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Similar strains
| Breeder | Heavyweight Seeds |
|---|---|
| Type | mostly indica |
| Flowering time | ±60 days |
| THC | 22% |
| CBD | 1.0% |
| Environment | Outdoors |
| Lineage | Northern Lights × Afghani |
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🧬 Explore the family: Northern Lights · Afghani
Ancestry Pedigree
Unknown or Legendary
Original Strains
Unknown or Legendary
Original Strains
Growing Green Ninja: 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 Northern Lights or Afghani 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.
Green Ninja FAQ
How long does Green Ninja take to flower?
Green Ninja typically flowers in around 60 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Green Ninja an indica or a sativa?
Green Ninja is listed as mostly indica.
What are the parents of Green Ninja?
Green Ninja was bred from Northern Lights × Afghani by Heavyweight Seeds.
How strong is Green Ninja?
Reported THC for Green Ninja is 22% and CBD 1.0%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does Green Ninja 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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