Grapefruit'matic by FastBuds

Grapefruit'matic strain photo
Type ruderalis/indica/sativaFlower ±63 daysTHC 19%Cross Grapefruit × Ruderalis

Bred by FastBuds from Grapefruit × Ruderalis, Grapefruit'matic is an indica-leaning cannabis variety. Indoors it typically finishes flowering in around 63 days after the flip to 12/12. Reported THC is 19% with CBD at 1%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Grapefruit'matic grows against.

🌿 Start a Grapefruit'matic journal — free →

Similar strains

Wedding Cheesecake AutoFastBuds · ±63 daysOriginal Auto BubbleGumFastBuds · ±63 daysDo Si Dos AutoFastBuds · ±60 daysFastBerryFastBuds · ±63 daysOriginal Auto SkunkFastBuds · ±56 daysPineapple ExpressFastBuds · ±63 daysAuto AmnesiaLinda Seeds · ±63 daysAuto Black OpiumDivine Seeds · ±63 daysAuto Blue DreamDutch-Headshop · ±63 daysAuto Blue MangoBSB · ±63 daysAuto ChemdogAuto Seeds · ±63 daysAuto Critical BangSputnik Seeds · ±63 daysAll FastBuds →
BreederFastBuds
Typeruderalis/indica/sativa
Flowering time±63 days
THC19%
CBD1%
EnvironmentOutdoors
LineageGrapefruit × Ruderalis

🌱 Get Grapefruit'matic seeds →
Affiliate link — supports Cultivar at no cost to you.

🧬 Explore the family: Grapefruit · Ruderalis

Ancestry Pedigree

Grapefruit
Clone Only Strains
Indica Sativa
Original Strains
Ruderalis
Original Strains

Growing Grapefruit'matic: 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 Grapefruit or Ruderalis 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.

Grapefruit'matic FAQ

How long does Grapefruit'matic take to flower?

Grapefruit'matic typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Grapefruit'matic an indica or a sativa?

Grapefruit'matic is listed as ruderalis/indica/sativa.

What are the parents of Grapefruit'matic?

Grapefruit'matic was bred from Grapefruit × Ruderalis by FastBuds.

How strong is Grapefruit'matic?

Reported THC for Grapefruit'matic is 19% and CBD 1%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.

What environment does Grapefruit'matic 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 Grapefruit'matic and something looks off? Free AI photo diagnosis →

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

Suggest an edit for Grapefruit'matic

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.