Apollo XX by Brothers Grimm
A indica-leaning cross of Apollo 11, Apollo XX — released by Brothers Grimm — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 59 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Apollo XX grows against.
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Similar strains
| Breeder | Brothers Grimm |
|---|---|
| Type | mostly indica |
| Flowering time | ±59 days |
| Environment | Outdoors |
| Lineage | Apollo 11 |
| Descendants | Apollo Blues |
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Brothers Grimm
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Brothers Grimm
Brothers Grimm
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The Seed Bank
Clone Only Strains
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Original Strains
Original Strains
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Cultivators Choice
Original Strains
Original Strains
Original Strains
Brothers Grimm
Brothers Grimm
Brothers Grimm
Brothers Grimm
Unknown or Legendary
Brothers Grimm
Unknown or Legendary
Brothers Grimm
Sensi Seeds
The Seed Bank
The Seed Bank
The Seed Bank
Growing Apollo XX: 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 Apollo 11 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.
Apollo XX FAQ
How long does Apollo XX take to flower?
Apollo XX typically flowers in around 59 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Apollo XX an indica or a sativa?
Apollo XX is listed as mostly indica.
What are the parents of Apollo XX?
Apollo XX was bred from Apollo 11 by Brothers Grimm.
What environment does Apollo XX 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 Apollo XX? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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