Heavyweight Seeds

At Heavyweight Seeds, we are specialists in Cannabis Seeds with very high performance & particularly strong effects. In our seed catalogue you will find the most powerful feminized seeds available on the market & autoflowering varieties that are making history worldwide! Our seedbank offers a full menu of flavours and tastes, contained in totally brutal crops. All you have to do is try them!

When Heavyweight seeds were originally set up in Spain in 2008, the initial concept was to develop a range of mouth-watering varieties, using only top quality, highly stable, pure strains.
Once the Heavyweight team was convinced that they had reached their goal, with varieties to satisfy all tastes, they were then ready to release their strains onto the European Market in 2010 after 2 years of dedicated, ongoing, research and development.

Heavyweight is already building a name for consistency and quality, time and time again.

The heavyweight ethos………..excellence!
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2 Fast 2 Vast Auto

2 Fast 2 Vast Auto cannabis seeds are the result of Heavyweight Seed’s work to improve on probably t..



This devastating G13 / Skunk #14 cross is a must for any grower whose serious about their smoke. For..



The team at Heavyweight have invested a great amount of time and effort creating the ultimate cheese..


Diesel Drift

Heavyweight Seeds strive to make the highest quality cannabis seeds accessible to everyone. Well, th..


Dream Machine

The Dream Machine is a variety that lives up to its name, it's a real machine!Able to reliably produ..


Extreme Impact Auto

Live life to the extreme and brace yourself for impact, these Indica dominant cannabis seeds are a h..


Fast & Vast Auto

If you seek the maximum amount and the maximum power in an automatic plant, there is no need to look..


Fruit Punch

Fruit Punch is fast becoming a legend around the globe; this quickly flowering sativa dominant plant..


Fruit Punch Auto

It’s finally here! After many requests Heavyweight have produced an autoflowering version of the leg..


Fully Loaded Auto

Heavyweight has been busy creating the next generation of auto-flowering cannabis seeds and they hav..


Gold Mine

Get ready to be dazzled! We are proud to announce the arrival of Goldmine, a plant simply amazing 24..


Green Ninja

The Green Ninja is ideal for those who want a stealthy and discreet cultivation. Short and highly br..


High Density Auto

For an autoflowering plant that from seed to harvest takes 8 weeks, this is spectacular, a stem bend..


Jackpot Auto

We’re proud to announce the arrival of Jackpot, an outstanding cross of the legendary Jack Herer and..


K.O. Kush

This is a fight we assure you that you will lose. This Indica dominant is a serious heavyweight for ..


Lemon Cake

Heavyweight Seeds has crossed a Lemon Skunk with a powerful dangerously Cheese, which has resulted i..