Harlo by SappFire Seeds

Harlo strain photo
Type indica/sativaFlower ±53 daysCross Harlequin × Bilo

Harlo lands on the indica-leaning side of the spectrum, SappFire Seeds's take on the Harlequin × Bilo line. Indoors it typically finishes flowering in around 53 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Harlo grows against.

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BreederSappFire Seeds
Typeindica/sativa
Flowering time±53 days
EnvironmentOutdoors, Greenhouse
LineageHarlequin × Bilo

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🧬 Explore the family: Harlequin · Bilo

Ancestry Pedigree

Harlequin
Clone Only Strains
Colombian Gold
Unknown or Legendary
Colombia Sativa
Original Strains
Colombia Hybrid
Original Strains
Thailand Sativa
Original Strains
Swizerland Sativa
Original Strains
Nepal Indica
Original Strains
Bilo
Unknown or Legendary
Big Bud
Sensi Seeds
Big Bud
The Seed Bank
USA Indica
Original Strains
Purest Indica
Clone Only Strains
Afghani
Unknown or Legendary
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
USA Indica
Original Strains
Purple
Unknown or Legendary
Unknown Strain
Original Strains
Pineapple
Unknown or Legendary
Unknown Strain
Original Strains
Blue Dream
Clone Only Strains
Blueberry
DJ Short
Blueberry Line
Unknown or Legendary
Temple Flo
DJ Short
Floral Line
Unknown or Legendary
Purple Thai
Unknown or Legendary
Highland Oxacan Gold
Unknown or Legendary
Mexico Sativa
Original Strains
Chocolate Thai
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
HTAF
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
Super Silver Haze
Mr Nice Seedbank
Super Silver Haze
Green House Seeds
Original Haze
Cultivators Choice
Haze
Unknown or Legendary
Colombia Sativa
Original Strains
Colombia Sativa
Original Strains
Colombia Sativa
Original Strains
Original Haze
Cultivators Choice
Purest Indica
Clone Only Strains
Hawaii Sativa
Original Strains

Growing Harlo: 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 Harlequin or Bilo 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.

Harlo FAQ

How long does Harlo take to flower?

Harlo typically flowers in around 53 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Harlo an indica or a sativa?

Harlo is listed as indica/sativa.

What are the parents of Harlo?

Harlo was bred from Harlequin × Bilo by SappFire Seeds.

What environment does Harlo 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 Harlo? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.