How to grow Grapefruit Auto
THC 20% 
Flowering 63 - 70 days 
Yield 400 – 550 g/m² 
Height 80-120cm Taste
Seb's take
Vancouver Sour Citrus meets a ruderalis backcross in Grapefruit Auto, a faithful autoflowering rendition of the original. Sweet, sour and grapefruit on the nose; the high is relaxed, happy and energetic at 20% THC — history preserved, just quicker to arrive.
Where it comes from
Fast Buds' autoflowering take on the grapefruit theme, crossing Vancouver Sour Citrus with a ruderalis. The Sour Citrus parent supplies the tang and the fruit; the ruderalis the automatic clock. The record calls it a good representation of the original with the autoflowering trait added — the aim being faithfulness rather than reinvention. An even 50/50 hybrid built for ease.
Nose & flavour
Sweet and sour in equal measure, with grapefruit front and centre — a bright, zesty, mouth-watering nose that lives up to the name. The Sour Citrus parentage does exactly what it says. Clean and refreshing rather than heavy or fuel-driven.
The high
Relaxed and happy, with an energetic thread keeping it lively — a balanced, upbeat high befitting the even genetics. At 20% THC it is moderate and good-natured, neither racing nor sinking. Pleasant daytime company that leaves you functional.
Growing it
Autoflowering, medium at 80 to 120cm. Flowering runs 63 to 70 days from seed, with yields of 400 to 550 g/m². CBD sits under 1%. A faithful, undemanding auto — the original's character with the scheduling removed, which makes it a fair choice for a grower after grapefruit flavour without the photoperiod bookkeeping.
Learn to grow her properly:
Effects
Common questions about Grapefruit Auto
How long does Grapefruit Auto take to flower?
Around 10 weeks of flowering, by the breeder's numbers.
Is Grapefruit Auto an autoflower or a photoperiod strain?
An autoflower — she flowers on age rather than light hours, which simplifies the schedule considerably.
How tall does Grapefruit Auto grow?
Around 120 cm. Standard tent territory.
How strong is Grapefruit Auto?
The breeder lists THC around 20%. Firmly in the strong band.
