How to grow Critical Impact
Seb's take
Critical Mass, Skunk #1 and Hindu Kush combined into a compact, heavy-yielding Indica-dominant hybrid — barely 70cm tall indoors yet capable of 550g/m². Long, dense, resin-rocked buds on a vigorous frame, fragrant enough that ventilation stops being optional. Does not travel discreetly.
Growing Critical Impact: 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 8 weeks — no surprises, which in this business is a compliment. The flowering stage guide covers what each of those weeks should look like.
She stays under the metre mark — tent-friendly, discreet, and unbothered by low ceilings. Run the numbers on the light planner and she'll fit wherever you put her.
A solid, dependable yield — 550 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 18% — firmly in the strong band. The number speaks for itself; we'll not add adjectives to it.
Learn to grow her properly:
Common questions about Critical Impact
How long does Critical Impact take to flower?
Around 8 weeks of flowering, by the breeder's numbers.
Is Critical Impact 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 Critical Impact grow?
Around 70 cm. Small tents take her without complaint.
How strong is Critical Impact?
The breeder lists THC around 18%. Firmly in the strong band.