Grendel by TreeTown Seeds
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Growers reach for Grendel as an indica-leaning option, a cross of Cinderella 99 × Afghani Nr1 out of TreeTown Seeds. Indoors it typically finishes flowering in around 50 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Grendel grows against.
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Similar strains
| Breeder | TreeTown Seeds |
|---|---|
| Type | mostly indica |
| Flowering time | ±50 days |
| Environment | Outdoors |
| Lineage | Cinderella 99 × Afghani Nr1 |
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🧬 Explore the family: Cinderella 99
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Growing Grendel: 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 Cinderella 99 or Afghani Nr1 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.
Grendel FAQ
How long does Grendel take to flower?
Grendel typically flowers in around 50 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Grendel an indica or a sativa?
Grendel is listed as mostly indica.
What are the parents of Grendel?
Grendel was bred from Cinderella 99 × Afghani Nr1 by TreeTown Seeds.
What environment does Grendel 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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