CBD Ultra by Pure Seeds
CBD Ultra lands on the indica-leaning side of the spectrum, Pure Seeds's take on the Mk-Ultra × Sativa line. Indoors it typically finishes flowering in around 85 days after the flip to 12/12. Reported THC is 10%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real CBD Ultra grows against.
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Similar strains
| Breeder | Pure Seeds |
|---|---|
| Type | 90% Sativa - 10% Indica |
| Flowering time | ±85 days |
| THC | 10% |
| Environment | Outdoors |
| Lineage | Mk-Ultra × Sativa |
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Growing CBD Ultra: 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 Mk-Ultra or Sativa 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.
CBD Ultra FAQ
How long does CBD Ultra take to flower?
CBD Ultra typically flowers in around 85 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is CBD Ultra an indica or a sativa?
CBD Ultra is listed as 90% Sativa - 10% Indica.
What are the parents of CBD Ultra?
CBD Ultra was bred from Mk-Ultra × Sativa by Pure Seeds.
How strong is CBD Ultra?
Reported THC for CBD Ultra is 10%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does CBD Ultra 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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