Mastodon Haze by Stillwater Genetics
A sativa-leaning cross of Grape Stomper BX2 × Grapefruit Haze, Mastodon Haze — released by Stillwater Genetics — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 67 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Mastodon Haze grows against.
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Similar strains
| Breeder | Stillwater Genetics |
|---|---|
| Type | mostly sativa |
| Flowering time | ±67 days |
| Environment | Outdoors |
| Lineage | Grape Stomper BX2 × Grapefruit Haze |
| Descendants | Woolly Widow |
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🧬 Explore the family: Grape Stomper BX2 · Grapefruit Haze · Woolly Widow
Ancestry Pedigree
Gage Green Genetics
Gage Green Genetics
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Clone Only Strains
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Original Strains
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Sensi Seeds
Sensi Seeds
The Seed Bank
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Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Cultivators Choice
Unknown or Legendary
Gage Green Genetics
Gage Green Genetics
Clone Only Strains
Next Generation Seed Company
Clone Only Strains
Original Strains
Green House Seeds
Cultivators Choice
Unknown or Legendary
Original Strains
Original Strains
Original Strains
Original Strains
Cultivators Choice
Original Strains
Growing Mastodon Haze: 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 Grape Stomper BX2 or Grapefruit Haze 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.
Mastodon Haze FAQ
How long does Mastodon Haze take to flower?
Mastodon Haze typically flowers in around 67 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Mastodon Haze an indica or a sativa?
Mastodon Haze is listed as mostly sativa.
What are the parents of Mastodon Haze?
Mastodon Haze was bred from Grape Stomper BX2 × Grapefruit Haze by Stillwater Genetics.
What environment does Mastodon Haze 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 Mastodon Haze? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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