Uptown Clockstar by Riot Seeds
Uptown Clockstar lands on the sativa-leaning side of the spectrum, Riot Seeds's take on the Clockwork Orange × Sensi Star line. Indoors it typically finishes flowering in around 84 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Uptown Clockstar grows against.
🌿 Start a Uptown Clockstar journal — free →
Similar strains
| Breeder | Riot Seeds |
|---|---|
| Type | mostly sativa |
| Flowering time | ±84 days |
| Environment | Outdoors |
| Lineage | Clockwork Orange × Sensi Star |
🌱 Get Uptown Clockstar seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Clockwork Orange · Sensi Star
Ancestry Pedigree
Riot Seeds
Clone Only Strains
Green House Seeds
Green House Seeds
De Sjamaan
Original Strains
Original Strains
Cultivators Choice
Unknown or Legendary
Original Strains
Original Strains
Original Strains
Original Strains
Paradise Seeds
Original Strains
Growing Uptown Clockstar: 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 Clockwork Orange or Sensi Star 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.
Uptown Clockstar FAQ
How long does Uptown Clockstar take to flower?
Uptown Clockstar typically flowers in around 84 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Uptown Clockstar an indica or a sativa?
Uptown Clockstar is listed as mostly sativa.
What are the parents of Uptown Clockstar?
Uptown Clockstar was bred from Clockwork Orange × Sensi Star by Riot Seeds.
What environment does Uptown Clockstar 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.
📷 Growing Uptown Clockstar and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Uptown Clockstar? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.