13th Floor by Matchmaker Genetics
13th Floor is an indica-leaning cannabis strain from Matchmaker Genetics, bred by crossing Do-Si-Dos × Sour Diesel BX2. Indoors it typically finishes flowering in around 55 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real 13th Floor grows against.
🌿 Start a 13th Floor journal — free →
Similar strains
| Breeder | Matchmaker Genetics |
|---|---|
| Type | indica/sativa |
| Flowering time | ±55 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Do-Si-Dos × Sour Diesel BX2 |
🌱 Get 13th Floor seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Do-Si-Dos · Sour Diesel BX2
Ancestry Pedigree
Archive Seed Bank
Unknown or Legendary
Clone Only Strains
Unknown or Legendary
Unknown or Legendary
Original Strains
Unknown or Legendary
Original Strains
Clone Only Strains
Original Strains
Original Strains
Archive Seed Bank
Original Strains
Clone Only Strains
Clone Only Strains
Karma Genetics
Reservoir Seeds
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Sensi Seeds
Sensi Seeds
The Seed Bank
Cultivators Choice
Original Strains
Original Strains
Original Strains
Original Strains
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Cultivators Choice
Unknown or Legendary
Clone Only Strains
Reservoir Seeds
Unknown or Legendary
Soma Seeds
Original Strains
Mr Nice Seedbank
Unknown or Legendary
Original Strains
Karma Genetics
Unknown or Legendary
Clone Only Strains
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Original Strains
Original Strains
Unknown or Legendary
Karma Genetics
Unknown or Legendary
The Cali Connection
Clone Only Strains
Clone Only Strains
The Cali Connection
Clone Only Strains
Sensi Seeds
Growing 13th Floor: 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 Do-Si-Dos or Sour Diesel BX2 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.
13th Floor FAQ
How long does 13th Floor take to flower?
13th Floor typically flowers in around 55 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is 13th Floor an indica or a sativa?
13th Floor is listed as indica/sativa.
What are the parents of 13th Floor?
13th Floor was bred from Do-Si-Dos × Sour Diesel BX2 by Matchmaker Genetics.
What environment does 13th Floor 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 13th Floor and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing 13th Floor? 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.