JEM by Mandalorian Genetics
JEM, from breeder Mandalorian Genetics, is an indica-leaning strain descended from Mossys Jem × Purple Jems. Indoors it typically finishes flowering in around 65 days after the flip to 12/12. Reported THC is 13%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real JEM grows against.
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| Breeder | Mandalorian Genetics |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±65 days |
| THC | 13% |
| Environment | Outdoors |
| Lineage | Mossys Jem × Purple Jems |
| Descendants | The Nose Knows |
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Growing JEM: 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 Mossys Jem or Purple Jems 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.
JEM FAQ
How long does JEM take to flower?
JEM 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 JEM an indica or a sativa?
JEM is listed as ruderalis/indica/sativa.
What are the parents of JEM?
JEM was bred from Mossys Jem × Purple Jems by Mandalorian Genetics.
How strong is JEM?
Reported THC for JEM is 13%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does JEM 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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