How to grow Hammershark

60% indica - 40% sativa
Hammershark — Resin Seeds

Seb's take

Seb Silverback

Dieseltonic crossed with Shark Shock, bred as a medical strain that refuses to sacrifice yield or flavour for the sake of its cannabinoid profile. Colours shift with the temperature in the room, a nice trick for a plant that also finishes in nine to ten weeks. Balanced and generous — the sort of strain that does its job without complaint.

Growing Hammershark: 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 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".

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 Hammershark

How long does Hammershark take to flower?

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

Is Hammershark 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 strong is Hammershark?

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