Fast and Vast
Free shipping and seeds
Free shipping and seeds

If you’re looking for maximum yields and maximum potency in an autoflowering strain then look no further than Heavyweight Fast & Vast. Fast was the first hurdle for Heavyweight Seeds, taking a sturdy white dwarf and crossing it with an auto skunk that would reach its full potential in 7 careful weeks, and then the Vast came when further crossing with a powerful Afghani auto.

Great care has been taken to ensure that the high yields are not at the expense of quality, the long thick buds covered in sparkling crystals produce a high quality soft and sweet smoke with spicy undertones. The effect is very fast and knock out, leading to a long relaxed stone.

Don’t expect Heavyweight Fast and Vast Auto to perform like any ordinary auto, for this is no ordinary auto, it’s a Heavyweight Auto!

Flowering Time
Thc Level
High : 15% +
Height Notes
100 to 120 cm
Sativa/Indica Notes
80% Indica; 20% Sativa
Indica >50% Cannabis Seeds
THC Notes
17 to 19% THC
Cannabis Genetics
Afghani x Skunk x White Dwarf
Short - Average
Outdoor Yield
600 to 800 gr/m2
Indoor Yield
75 to 100 gr/seed
0.8% CBD
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In 2008, the founders of Heavyweight Seeds were blown away when they saw the mother's a local supplier was working with. They managed to talk this dude out of a few cuts that they smuggle back to Spain where they created their own fabulous gene pool and started selling their own 100% feminized & fully autoflowering cannabis seeds. What makes Heavyweight Seeds different? If a strain isn't able to flourish in the harshest conditions, doesn't return at least 10% when extracted or yield like a boss, it's out of there! This breeder never accepts good enough, and neither should you. Order your genuine Heavyweight Seeds now.