How to grow The OG #18

75% indica - 25% sativa
The OG #18 — Reserva Privada

Seb's take

Seb Silverback

A re-feminized OG Kush S1 phenotype that yields roughly a third more than the original, with a sourer edge to the aroma to match. Kush on the nose throughout; tall and vigorous given the room, resistant to pests and disease, and reliable across both indoor and outdoor setups.

Growing The OG #18: 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 10 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 140 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 – 600 g/m² under decent conditions. Nothing that requires bragging; everything that justifies the effort. The yield lesson covers getting to "decent conditions".

THC of 25% by the breeder's numbers — the top shelf of the scale. Approach as you would a staircase in the dark.

Learn to grow her properly:

Common questions about The OG #18

How long does The OG #18 take to flower?

Around 10 weeks of flowering, by the breeder's numbers.

Is The OG #18 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 The OG #18 grow?

Around 140 cm. Standard tent territory.

How strong is The OG #18?

The breeder lists THC around 25%. Among the strongest figures in the catalogue.