Auto Monster Mass
Every single Auto Monster Mass is equally strong, but this potent AutoFem comes in three different colours: neon green, lush lavender or eerie blue. According to CMC, the ghostly blue is the best with sweeter floral flavours that'll reach out and grab you. In a totally good way, of course! With Auto Monster Mass Seeds, you'll get an amazing 20% THC level paired with strong, sedating stones and 80 day or less finishes from the start.
  • 100% Feminized Seeds
  • Fully Autoflowering
  • 20% THC - 800 gr/m2
  • 70 to 80 Days from Seed!
Free shipping and seeds
Free shipping and seeds

Soaring 20% THC Levels Paired with 800 gr/m2 Yields - Incredible!

Auto Monster Mass is another fine example of the breeding expertise you'll find at Critical Mass Collective! Somehow, they introduced Ruderalis to this mix to bring the finish down to 80 days or less from weed seed without putting a damper on the power or the yield. Inside, 800 gr/m2 is totally doable, with 300 gr/seed yields outside. Either way, the power is astounding at 18 to 20% THC!

  • Extra-Large, Pearlescent Flowers
  • Up to 300 gr/seed Outside
  • Loves SCROG - Maximizes Yield
  • 60 to 140 cm Tall - 80 Days or Less from Seed!

This branch-buster also offers all the aroma, taste and smashing effects needed to satisfy even hardest-to-please connoisseurs. The fragrance is incredibly strong and filled with musky skunk, dark fruit and an earthy sweetness, and the flavour is a multi-layered affair that includes Kush, Skunk, cola and blackberries to start followed by hash and sweet lemons. Once Auto Monster Mass's effects set in, they seem to go on forever with a three-hour couchlocking stone that'll sedate both your body and your mind. Awesome!

Why Wait? Order Your Auto Monster Mass Seeds Today!

NB: The Rhino is proud to bring you Critical Mass Collective's full line of autoflowering seeds including Auto Sour Melon Mass and Auto Mendo Mass. Check the rest out before you order. At these prices, you can try them all!

Flowering Time
Thc Level
High : 15% +
Height Notes
60 to 140 cm
Indica >50% Cannabis Seeds
THC Notes
18 to 20% THC
Flowering Time Notes
70 to 80 Days from Seed
Cannabis Genetics
Monster Mass X Big Bud Auto
Short - Average
Outdoor Yield
200-300 gr/seed
Indoor Yield
800 gr/m2

If you're in the market for a fully automatic strain, why not get a high-performance, next-generation AutoFem like Auto Monster Mass by Critical Mass Seeds? This impressive hybrid is capable of producing up to 800 gr/m2 in yield with 20% THC in just 80 days from the start. With those kind of numbers, why would you ever need a photoperiod strain? Place your order today - The Rhino prefers bitcoins!

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  • 100% Feminized Seeds
  • Fully Autoflowering
  • 20% THC - 800 gr/m2
  • 70 to 80 Days from Seed!

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Before the Critical Mass Collective was even a gleam in Critical Lee's eye, this highly respected breeder fell in love with the legendary Critical Mass strain. Of course, he couldn't pass on the chance to improve on perfection, so he soon tweaked CM until he came up with Monster Mass, a new hybrid with even more yield & more power than it's infamous mom. Today, you can take advantage of all that hard work and pick up your own Critical Mass Collective feminized and AutoFem seeds. You'd be crazy not to!