Aliens JackD Up by Sin City Seeds

Aliens JackD Up strain photo
Type 60% Sativa / 40% IndicaFlower ±65 daysCross Sour Alien × Sour Jack

Aliens JackD Up lands on the indica-leaning side of the spectrum, Sin City Seeds's take on the Sour Alien × Sour Jack line. Indoors it typically finishes flowering in around 65 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Aliens JackD Up grows against.

🌿 Start a Aliens JackD Up journal — free →

Similar strains

SinFully SourSin City Seeds · ±67 daysAliens On MoonshineSin City SeedsSin City Seeds - Rappers DelightSin City SeedsTriple Cherry DieselSin City Seeds · ±65 daysDream N SourSin City Seeds · ±69 daysWhite CranberriesSin City Seeds · ±64 daysMoby DickBSB · ±65 daysVanilla FrostingAnesia Seeds · ±65 daysChemPieRipper Seeds · ±63 daysCloud #7Herbaria · ±63 daysFruity M. MasBCN Seeds · ±63 daysKalashnikovLimited Seeds · ±67 daysAll Sin City Seeds →
BreederSin City Seeds
Type60% Sativa / 40% Indica
Flowering time±65 days
EnvironmentOutdoors
LineageSour Alien × Sour Jack

🌱 Get Aliens JackD Up seeds →
Affiliate link — supports Cultivar at no cost to you.

🧬 Explore the family: Sour Alien · Sour Jack

Ancestry Pedigree

Sour Alien
The Cali Connection
Original Sour Diesel
The Cali Connection
Sour Diesel
Unknown or Legendary
Original Diesel
Unknown or Legendary
MassSuperSkunk
Unknown or Legendary
Super Skunk
Sensi Seeds
Skunk Nr1
Sensi Seeds
Skunk Nr1
The Seed Bank
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Afghanistan Indica
Original Strains
Chem Dawg
Unknown or Legendary
Indica
Original Strains
DNL
Unknown or Legendary
RFK
Unknown or Legendary
Skunk
Unknown or Legendary
Skunk Nr1
Cultivators Choice
Northern Lights
Unknown or Legendary
Sour OG
The Cali Connection
Sour Diesel
Unknown or Legendary
SFV OG Kush
The Cali Connection
SFV OG
Clone Only Strains
OG Kush
Clone Only Strains
Thailand Sativa
Original Strains
Chem Dawg
Unknown or Legendary
Afghani Nr1
Sensi Seeds
Afghanistan Indica
Original Strains
Afghanistan Indica
Original Strains
Alien Kush
The Cali Connection
Las Vegas Purple Kush
Clone Only Strains
Northern Lights
Unknown or Legendary
Hindu Kush Indica
Original Strains
Alien Dog
The Cali Connection
Chem Dawg
Unknown or Legendary
Alien Technology
Unknown or Legendary
Afghanistan Indica
Original Strains
Sour Jack
Karma Genetics
Sour Diesel IBL
Reservoir Seeds
Sour Diesel
Unknown or Legendary
Jack Herer
Sensi Seeds
Northern Lights Nr5
The Seed Bank
Northern Lights 5 Skunk Nr1 F1 Hybrid
The Seed Bank
Northern Lights Nr5
The Seed Bank
Skunk Nr1
The Seed Bank
Original Haze
Cultivators Choice
Haze
Unknown or Legendary
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Thailand Sativa
Original Strains
India Sativa
Original Strains

Growing Aliens JackD Up: 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 Sour Alien or Sour Jack 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.

Aliens JackD Up FAQ

How long does Aliens JackD Up take to flower?

Aliens JackD Up typically flowers in around 65 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Aliens JackD Up an indica or a sativa?

Aliens JackD Up is listed as 60% Sativa / 40% Indica.

What are the parents of Aliens JackD Up?

Aliens JackD Up was bred from Sour Alien × Sour Jack by Sin City Seeds.

What environment does Aliens JackD Up 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 Aliens JackD Up and something looks off? Free AI photo diagnosis →

Facts compiled from public breeder listings. Growing Aliens JackD Up? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

Suggest an edit for Aliens JackD Up

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.

Or just open the card now — no email needed →

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.