How to grow Grapefruit
Seb's take
Selected from a Grapefruit phenotype of C99, this original is now scarcer than its many descendants, most breeders having moved on to crosses of their own. Grapefruit, citrus and tropical sweetness on the nose; the high is energetic, talkative and creative at 16-19% THC — deep thinking, by all accounts, comes with the territory.
Growing Grapefruit: what to expect
Feminized photoperiod seed: every plant a female, and flowering starts when you change the lights — which puts the calendar in your hands. The photoperiod lesson covers using that control well.
Flowering runs the standard 9 weeks — no surprises, which in this business is a compliment. The flowering stage guide covers what each of those weeks should look like.
A middling 100 cm or so at maturity — tall enough to yield, short enough to manage. Standard tent territory; the light planner sorts the hanging height.
A solid, dependable yield — 500 g/m² under decent conditions. Nothing that requires bragging; everything that justifies the effort. The yield lesson covers getting to "decent conditions".
Breeder figures put THC around 19% — firmly in the strong band. The number speaks for itself; we'll not add adjectives to it.
The aroma is citrus-forward: zest first, everything else in its wake.
The dominant note in the reviews is uplifting; daytime company, by most accounts.
Learn to grow her properly:
Grapefruit from other breeders
The same name, several hands. Every breeder’s version below is its own cut — different figures, different temperament, same family. The particulars above describe the lead listing.
- Positronics Seeds feminized Seeds at Herbies →
Common questions about Grapefruit
How long does Grapefruit take to flower?
Around 9 weeks of flowering, by the breeder's numbers.
Is Grapefruit an autoflower or a photoperiod strain?
A feminized photoperiod strain — flowering starts when you switch the lights, so the timing is yours to control.
How tall does Grapefruit grow?
Around 100 cm. Standard tent territory.
How strong is Grapefruit?
The breeder lists THC around 19%. Firmly in the strong band.