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Who are Critical Mass Collective?

Critical Mass Collective were born from the creation of Monster Mass in 2002 by a young man in Arizona. The focus was on monster Yields in short productive flowering times with powerful effects and so Monster Mass became the base strain of every cross in the Critical Mass Collectives breeding program.

Critical Mass Collective Strains

Critical Mass Collective use Monster Mass in all its breeding programs with the aim in perfecting high yielding cannabis strains with a variety of different positive atributes. They currently have around 10 Cannabis Strains for Sale and they have adopted a simple souvenir pack which protects the seeds from damage in a plastic vial stock with glue onto a business card. 

Critical Mass Collective Review

In our opinion Critical Mass Collective are a very good cannabis breeder with good reliability. They provide high yielding Marijuana genetics with lots of variety and prices are slightly cheaper than others at around £4-6 per Seed.  Because Critical Mass Collective sell well on our website and we don’t get any complaints we rate them 8/10. The reason Critical Mass Collective get a slightly higher score than some others is because of the quality and low price.

Critical Mass Collective Guarantee

At Just Feminized we can guarantee that your pack of Critical Mass Collective Seeds is less than 2 years old. We know this because we date every single pack of seeds that arrive into our office. We can also Guarantee that your seeds have been stored in the most professional conditions possible in our fridge. We can also guarantee that every pack of Critical Mass Collective Cannabis Seeds will come in the original Breeders packaging. The only thing we can't guarantee is the germination or growing of the plants as marijuana seeds are sold as souvenirs in the UK. If you have issues with specific products we would recommend approaching the breeder directly as individual breeders may assist your needs.


Critical Mass Collective Auto Massassin Female 10 Seeds
  • Mass x AK47 x CMC Big Bud Auto
  • Medium High Yielding Strain
  • 55 Days Flowering Time
  • 100% Feminized Female Seeds
£51.75
Critical Mass Collective Auto Massassin Feminised 5 Seeds
  • Monster Mass x AK47 x CMC Big Bud Auto
  • Height: 75-100 cm
  • Flowering Time: 55 Days
  • Yield: 450 gr/m²
£31.95
Critical Mass Collective Auto Masszar Female 10 Seeds
  • Genetics: Monster Mass x Mazar x CMC Big Bud Auto
  • Flowering Time: 65-70 Days
  • Yield: Indoors 550 gr/pp, Outdoors 80-150 gr/pp
  • Taste: Deeply Hashy, Sweet Vanilla, Hints Of Orange
£51.75
Critical Mass Collective Auto Masszar Feminised 5 Seeds
  • Monster Mass x Mazar x CMC Big Bud
  • 65 Days Flowering Time
  • Medium Cannabis Plant Height
  • Original Breeders Packaging
£31.95
Critical Mass Collective Auto Mendo Mass Female 10 Seeds
  • Monster Mass x Mendocino Purps x CMC Big Bud Auto
  • Indoor yield: Approx 550g/m²
  • Seed to flower: Approx 70-80 days
  • Height: Approx 60-120cm
£51.60
Critical Mass Collective Auto Mendo Mass Feminised 5 Seeds
  • Monster Mass x Mendocino Purps x CMC Big Bud Auto
  • Indoor yield: Approx 550g/m²
  • Seed to flower: Approx 70-80 days
  • Height: Approx 60-120cm
£32.30
Critical Mass Collective Auto Monster Mass Female 10 Seeds
  • Monster Mass x CMC Big Bud Auto
  • Indoor yield: Approx 800g/m²
  • Seed to flower: Approx 70-80 days
  • Height: Approx 60-140cm
£51.60
Critical Mass Collective Auto Monster Mass Feminised 5 Seeds
  • Monster Mass x CMC Big Bud Auto
  • Indoor yield: Approx 800g/m²
  • Seed to flower: Approx 70-80 days
  • Height: Approx 60-140cm
£32.30
Critical Mass Collective Auto Purple Dawg Mass Fem 10 Seeds
  • Monster Mass x Lavender x Purple Chemdawg x CMC Big Bud Auto
  • Approx 130-180g/per plant
  • Seed to ?ower: Approx 70-75 days
  • Height: Approx 0.80m-1.2m
£51.60
Critical Mass Collective Auto Purple Dawg Mass Female 5 Seeds
  • Monster Mass x Lavender x Purple Chemdawg x CMC Big Bud Auto
  • Approx 130-180g/per plant
  • Seed to ?ower: Approx 70-75 days
  • Height: Approx 0.80m-1.2m
£32.30
Critical Mass Collective Auto Purple Skunk Mass Female 10 Seeds
  • Monster Mass x Lavender x Afghani x CMC Big Bud Auto
  • Indica Dominant Flowering Time 50-60 Days
  • Indoors 600 gr/m², Outdoors 100-140 gr/pp
  • Height 60-120cm 18% THC
£51.60
Critical Mass Collective Auto Purple Skunk Mass Feminised 5 Seeds
  • Monster Mass x Lavender x Afghani x CMC Big Bud Auto
  • Indica Dominant Flowering Time 50-60 Days
  • Indoors 600 gr/m², Outdoors 100-140 gr/pp
  • Height 60-120cm 18% THC
£32.30
Critical Mass Collective Auto Sour Mellon Mass Fem 5 Seeds
  • Monster Mass x Sensi Star x CMC Big Bud Auto
  • Indoor yield: Approx 670g/m²
  • Seed to flower: Approx 70-80 days
  • Height: Approx 0.60m-1.3m THC: 20%
£32.30
Critical Mass Collective Auto Sour Mellon Mass Female 10 Seeds
  • Monster Mass x Sensi Star x CMC Big Bud Auto
  • Indoor yield: Approx 670g/m²
  • Seed to flower: Approx 70-80 days
  • Height: Approx 0.60m-1.3m THC: 20%
£51.60
Critical Mass Collective Monster Mass Female 10 Seeds
  • Genetics: Select Critical Mass x Select Critical +
  • Flowering Time: 45-50 Days
  • THC: 18-20% Intensely Fruity And Sweet
  • Yield: Indoors 700-800 gr/m², Outdoors 900+ gr/pp
£51.75
Critical Mass Collective Monster Mass Feminised 5 Seeds
  • Critical Mass x Select Critical +
  • Medium High Yielding Strain
  • Flowering Time Approx 55 days
  • 100% Feminized Female Seeds
£31.95
Critical Mass Collective Moonshine Mass Female 10 Seeds
  • Monster Mass x Old School Haze
  • Sativa Dominant Flowering Time 60-65 Days
  • Indoors 600 gr/m², Outdoors 750 gr/pp
  • Gin, Citrus, Hazey Pine Undertone
£51.60
Critical Mass Collective Moonshine Mass Feminised 5 Seeds
  • Monster Mass x Old School Haze
  • Sativa Dominant Flowering Time 60-65 Days
  • Indoors 600 gr/m², Outdoors 750 gr/pp
  • Gin, Citrus, Hazey Pine Undertone
£32.30
Critical Mass Collective Psychotropic Mass Fem 10 Seeds
  • Genetics: Monster Mass x Cannatonic X
  • Yield: Indoors 550 gr/m², Outdoors 650 gr/pp
  • THC: 6.4% CBD: 6.4%
  • Taste: Tangy, Fruity, Caramel, Rich Honey
£51.75
Critical Mass Collective Psychotropic Mass Fem 5 Seeds
  • THC: 6.4% CBD: 6.4%
  • High in Medicinal Values
  • Indoors 550 gr/m², Outdoors 650 gr/pp
  • Flowering Time: 55 Days
£31.95
Critical Mass Collective Purple Dawg Mass Female 10 Seeds
  • Monster Mass x Lavender x Purple Chemdawg
  • Approx 130-180g/per plant
  • Seed to ?ower: Approx 70-75 days
  • Height: Approx 0.80m-1.2m
£51.60
Critical Mass Collective Purple Dawg Mass Feminised 5 Seeds
  • Monster Mass x Lavender x Purple Chemdawg
  • Approx 130-180g/per plant
  • Seed to ?ower: Approx 70-75 days
  • Height: Approx 0.80m-1.2m
£32.30
Critical Mass Collective Purple Skunk Mass Fem 10 Seeds
  • Genetics: Monster Mass x Lavender x Afghani Skunk
  • Flowering Time: 55-60 Days
  • Yield: Indoors 600-700 gr/m², Outdoors 850 gr/pp
  • THC: 20-22% Hash Flavour With Citrus Hints
£51.75
Critical Mass Collective Purple Skunk Mass Fem 5 Seeds
  • Monster Mass Lavender Afghani
  • 8-9 Weeks Flowering Time
  • Medium High Strength Cannabis Strain
  • Official Dealer for this Breeder!
£31.95
Critical Mass Collective Super Mutant Mass Female 10 Seeds
  • Monster Mass x Shiva Skunk (Mutant Pheno)
  • Flowering Time 60 Days End September
  • Indoors 700 gr/m², Outdoors 900 gr/pp
  • Skunky, Wood, Lemon, Mango, Spice
£51.60

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(Major Dutch, Canadian, English and Spanish Seed banks Available)

Cannabis seeds are sold strictly as collectible adult souvenirs or to preserve cannabis genetics for future use if the law changes. Justfeminized.com can accept no liability for improper or unlawful uses of our products. Unfortunately we cannot guarantee marijuana seed germination rates of any of our products as growing marijuana is illegal in most countries and it is almost impossible to know how the seeds were handled.
 
Information on our site is for research purposes only and not intended for promoting illegal activity!
 
Please check your countries local cannabis seed laws before making a purchase. If you live in a country where marijuana seeds are illegal and the Ganja Seeds are taken by customs we will not re send your order!
 
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We are a Marijuana Seeds Supplier that takes Credit and Debit Card Payments seriously. All Cannabis Strain Payments are Processed Securely through Sagepay and we have 3D Secure, Verified by Visa & Mastercard Secure Card enabled for the most secure checkout process online GUARANTEED - This is something that sets us apart from other Ganja Products Suppliers and Headshops as it is hard to acquire payment providers in the weed industry.
We accept credit and debit card payments up to £200 and process through our 256 bit encrypted secure online payment system. We do not hold your credit card details as all information is processed though Sagepay and your important information is kept safe.

We also accept payments via Bank Transfer or even more discreetly though a cash deposit in a local bank. If you want you can also use Western Union online or in cash at one of their outlets. The most discreet method of payment for ultra playing it safe customers would be to send us the money in cash through the post.
We offer some very Discreet Stealth Delivery Options - We place cannabis seeds inside a Ball Point Pen - Ganja Seeds in a Hidden Keyring - Skunk Seeds inside a Metal Bolt - Weed Seeds inside a Safe Keyring - Choose your options during Checkout
We have some very discreet, stealth delivery options available. Simply choose which method you would like during checkout. These options are constantly evolving and we have some great safe options for 2019.
 
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