Green Crack strain: every version compared

Which Green Crack should you grow?

Picking a Green Crack is about how much height you have and how fast you want her done.

Photoperiod or autoflower? Photoperiods give the full plant, run on a timer and list THC 17–25%. Autoflowers finish on their own clock from seed, 56–68 days, at 20–22%. For a first grow, an auto takes the timing worry away.

How much headroom have you got? This is where the versions split. The autos are listed at 90–150 cm; one photoperiod is listed at up to 300 cm. Read the height column before the THC one, and if your tent is short, an auto is the sensible start, though check which one, since they are not all compact.

Green Crack photoperiod (feminized)

The photoperiod versions are the full Green Crack: you set the clock, with an 18-hour day in veg and a 12-hour day to flower. They finish in 48–60 days, with listed THC 17–25%. Heights are listed at 120–300 cm and swing widely.

Green Crack autoflower

In autoflower form Green Crack stays quick and simple: these finish on age, so the only timing you manage is when to harvest, not when to flip. There are 3 autos here, and they keep the sharp, energetic Green Crack character. Seed-to-harvest times run 56–68 days. Heights are listed at 90–150 cm, so read the figure rather than assuming an auto is tiny. Listed THC on the autos sits at 20–22%, and one of them carries the biggest listed yield on the page. Breeders fold a Ruderalis backcross into the Skunk and Afghani base to set the clock. For a first grower who wants Green Crack's energy without a light schedule, start here.

How Green Crack grows

Green Crack is sativa-leaning and quick, and the versions give you a real choice on size. Humboldt's feminized line is the tall one, listed at 300 cm, and they are clear that it rewards space and that cramped quarters will not suit her, so give her the height and be ready to manage the stretch. At the other end, Fast Buds' auto is listed at a compact 90 cm, which they call a genuine advantage where height is short. Heights across the family run 90–300 cm, so pick your version to your room rather than fighting it later.

Speed is the other reason people grow her. Herbies' Fast Version is the quick one, listed at 48 days once you flip to 12/12, though you can vegetate as long as you like beforehand. That is full photoperiod control up front and then a fast, fixed run to harvest: useful if you want to set the plant's final size yourself. The autos run 56–68 days from seed, and Herbies list their auto at 610 to 702 g/m², with 150 cm of plant to make room for.

Fast Buds call theirs easy to grow, a sound choice for a discreet or space-limited setup. The slowest photoperiod is listed at 60 days in flower and the slowest auto at 68 days from seed. Match the version to your ceiling and the rest is steady basics.

Where Green Crack comes from

Green Crack is a named cross, and the catalogue mostly agrees on its make-up. The best-known telling crosses Skunk #1 with Afghani. Humboldt trace the Skunk #1 parent to Afghan, Colombian and Thai stock, and say the added Afghani stabilised the hybrid and pushed the strength up. Cali Connection list a different road entirely, a Cecil B. and Deadhead cross. The autoflowering versions fold a Ruderalis backcross onto the same Skunk-and-Afghani foundation. Despite the sativa-sounding name, Herbies call her a well-balanced hybrid; most listed splits sit around 40/60. For all that lineage spread, most profiles describe a similar bright, energetic character. We give each version's lineage in its breeder's words and let the differences stand.