Cannabis seed collection
High THC cannabis seeds in Australia
High THC seeds are for growers who want the most potent result their patch can produce. This range collects strains that consistently test above 20% THC, with several pushing past 25% when grown well, in feminised and autoflower form. Potency isn't just genetics — Australian sun and long summer days give these strains the intense light they need to reach their full potential, which is why outdoor grows in Queensland, Western Australia and inland New South Wales can rival indoor results. Each listing shows the tested THC range, the terpene profile that shapes the effect, and how the strain handles heat, so you can pick something that delivers strength without wilting in a January heatwave. Expect dense, resin-heavy flowers that reward careful drying and curing.
Cannabis seed results
X-Files
X-Files is a feminised hybrid cultivar documented with Sour Diesel genetics and an earthy, berry aroma profile.
XJ-13
XJ-13 feminised seeds have a 60% sativa, 40% indica profile, with earthy, fruity, sweet, citrus, pine and mint flavours.
From $89.00
Yoda's Brain
Yoda's Brain is a feminised cultivar with documented Skywalker x Hindu Kush lineage and a reported indica phenotype.
Yumbolt Banana Auto
Yumbolt Banana Auto is an autoflower seed with balanced indica–sativa genetics and sweet, fruity banana and tropical flavours.
From $99.00
Z OG
Z OG feminised seeds offer a balanced indica–sativa profile with sweet citrus, fruity, kush and candy flavours.
From $89.00
Z OG Auto
Z OG Auto is an indica-dominant autoflower with sweet citrus, fruity, kush and candy flavours, suited to beginners and hot, dry or temperate climates.
From $89.00
Zashimi
Zashimi is a feminised hybrid listed as Sherbert x The Original Z, with citrus and berry descriptors and reported THC of 19–26%.
Zoap
Zoap feminised photoperiod seeds offer a balanced 50/50 hybrid profile with sweet, fruity, citrus, cherry and earthy flavours.
From $89.00
Zombie Death Fuck
Zombie Death Fuck feminised seeds offer a balanced indica-sativa profile with fruity, chilli and earthy flavours, flowering in 8–10 weeks.
From $79.00