Are you over 18?

You have to be 18 years or older to enter this website.

Sorry, Adults Only.


Monster Mass Feminised Seeds


Be the first to review this product


Monster Mass is the strain that started the CMC team's insatiable thirst to grow the best Critical Mass hybrid the world has ever seen.

Availability: In stock

Product Name Price Qty
Monster Mass Feminised 3 Pack
Monster Mass Feminised 5 Pack
Monster Mass Feminised 10 Pack


Monster Mass is the perfect strain for both outdoor and indoor cultivation due to its explosively fast flowering and hardiness.

Outdoor is recommended as it grows much taller and with much more branching.

CriticalLee recommends the practice of FIM-ing the plant at an early stage when growing indoors. Once it's put out 3-5 nodes, this is the ideal time as this will stimulate lower growth whilst producing up to 4 colas rather than one main one, which will boost production.

Outdoors LST is not necessary as natural climatic conditions will bend and Super Crop the plants for you.

It is not overly affected by fungi or mould due to its ferociously fast flowering cycle, which is around 45-50 days when grown indoors.

If cultivating indoors, good ventilation and sensible humidity levels should be maintained throughout the grow.

Outdoors it should be ready between mid and the end of September.

This strain is well known for its spectacular aroma of fruit and pungent skunk, overwhelming and powerful.

The Critical+ phenotype that was used for this cross is exceptionally fruity and displayed a notable Blackberry sweetness.

The flavour is an intensely fruity and sweet sugary flavour with touches of citrus. Big flavours of Kush, Blackberries and Cola Cubes are also possible.

It is sweet and fruity on the inhale and full on pungent Skunk and hash on the exhale, finally leaving the mouth ringing with sweet exotic fruit.

Sedative effects can last 2 - 4 hours producing a full-on body and mind melt.

Can be used as a muscle relaxant and a real appetite stimulant.

Smoke in moderation because one extremely rare phenotype tested THC percentages at just over 22% making for a truly overwhelming experience.

Aesthetically very pretty with large, medium density buds, that are pale green with a golden dusty shimmer and flame red hairs.

Sticky even when perfectly cured with a deeply pungent and extremely fruity smell when cracked open.

Additional Information

Seed Bank Critical Mass Collective
Seed Type Feminised
Flowering Type Photoperiod
Genetics Critical Mass x Critical+
Where to Grow Indoor / Outdoor
Flowering Time 45 - 50 days
Type Indica / Sativa
Yield Indoors: 700 - 800 gr/m2 | Outdoors: 900+ gr/pl
THC 18 - 20%

Free Delivery


- FREE for all orders over £25.00 GBP

- only £3.50 for orders up to £25.00

- only £7 for Special Delivery


Rest of the World

- FREE if order value exceeds £250.00 GBP

- only £10.00 for orders below £250


All orders despatched within 24 hours (if in stock).

We accept the following payment methods:


  • Bank Transfer - 5% discount
  • Cash
  • Bitcoin, Litecoin and other cryptocurrencies - 5% discount


We accept the following currencies GBP, EURO and USD (notes only) & strongly advise that a Registered Delivery service is used.

Buy 3 Get 1 Free


Write Your Own Review

Only registered users can write reviews. Please, log in or register