Blackberry Jack by Howe Farms
A sativa-leaning cross of Hawaii Sativa × Nepal Indica, Blackberry Jack — released by Howe Farms — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 65 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Blackberry Jack grows against.
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Similar strains
| Breeder | Howe Farms |
|---|---|
| Type | mostly sativa |
| Flowering time | ±65 days |
| Environment | Greenhouse |
| Lineage | Hawaii Sativa × Nepal Indica |
| Descendants | Teepee Creeper |
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Growing Blackberry Jack: what to expect
As a sativa-leaning plant, plan for a big stretch after the flip (often 100–200%) — flip earlier than feels natural and keep training options ready. Sativa-leaning plants also generally prefer a lighter feed than heavy indicas. Growers familiar with Hawaii Sativa or Nepal Indica 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.
Blackberry Jack FAQ
How long does Blackberry Jack take to flower?
Blackberry Jack typically flowers in around 65 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Blackberry Jack an indica or a sativa?
Blackberry Jack is listed as mostly sativa.
What are the parents of Blackberry Jack?
Blackberry Jack was bred from Hawaii Sativa × Nepal Indica by Howe Farms.
What environment does Blackberry Jack 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 Blackberry Jack? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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