Grumpy Grape by Black Sheep
Grumpy Grape lands on the indica-leaning side of the spectrum, Black Sheep's take on the Jelly Roll × Runtz line. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Grumpy Grape grows against.
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Similar strains
| Breeder | Black Sheep |
|---|---|
| Type | mostly indica |
| Environment | Outdoors |
| Lineage | Jelly Roll × Runtz |
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🧬 Explore the family: Jelly Roll · Runtz
Ancestry Pedigree
Colorado Seed Inc
Jordan of the Islands
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Original Strains
Dutch Passion
Dutch Passion
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Unknown or Legendary
Cultivators Choice
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Original Strains
Colorado Seed Inc
Colorado Seed Inc
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Clone Only Strains
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Original Strains
Clone Only Strains
Rare Dankness Seeds
Clone Only Strains
Rare Dankness Seeds
Clone Only Strains
Unknown or Legendary
Original Strains
Reservoir Seeds
Unknown or Legendary
Reservoir Seeds
Unknown or Legendary
Reservoir Seeds
Unknown or Legendary
Sensi Seeds
The Seed Bank
The Seed Bank
Clone Only Strains
Unknown or Legendary
Unknown or Legendary
Clone Only Strains
Unknown or Legendary
Cultivators Choice
Unknown or Legendary
Original Strains
Original Strains
Original Strains
Cultivators Choice
Clone Only Strains
Original Strains
Growing Grumpy Grape: 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 Jelly Roll or Runtz 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.
Grumpy Grape FAQ
Is Grumpy Grape an indica or a sativa?
Grumpy Grape is listed as mostly indica.
What are the parents of Grumpy Grape?
Grumpy Grape was bred from Jelly Roll × Runtz by Black Sheep.
What environment does Grumpy Grape 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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