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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 - Fem 10 Pack
  • Mass x AK47 x CMC Big Bud Auto
  • Medium High Yielding Strain
  • 55 Days Flowering Time
  • 100% Feminized Female Seeds
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Critical Mass Collective - Auto Massassin - Fem 5 Pack
  • Free Seeds at Checkout
  • Low Price Guaranteed
  • Stored in commercial fridge
  • Stealth Delivery options
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Critical Mass Collective - Auto Masszar - Fem 10 Pack
  • Telephone Customer Service
  • Dated Packets to show age
  • 24hr Delivery Available
  • Double Back Price Guarantee
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Critical Mass Collective - Auto Masszar - Fem 5 Pack
  • Monster Mass x Mazar x CMC Big Bud
  • 65 Days Flowering Time
  • Medium Cannabis Plant Height
  • Original Breeders Packaging
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Critical Mass Collective - Monster Mass - Fem 10 Pack
  • Same Day Dispatch
  • At least 10% OFF RRP
  • Professional Service
  • Free Seed Options at Checkout
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Critical Mass Collective - Monster Mass - Fem 5 Pack
  • Critical Mass x Select Critical +
  • Medium High Yielding Strain
  • Flowering Time Approx 55 days
  • 100% Feminized Female Seeds
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Critical Mass Collective - Psychotropic Mass - Fem 10 Pack
  • Over 5000 Strains for Sale
  • UK Cannabi Seeds Supplier
  • Worldwide Delivery Options
  • Credit Cards Accepted
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Critical Mass Collective - Psychotropic Mass - Fem 5 Pack
  • THC: 6.4% CBD: 6.4%
  • High in Medicinal Values
  • Indoors 550 gr/m2, Outdoors 650 gr/pp
  • Flowering Time:    55 Days
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Critical Mass Collective - Purple Skunk Mass - Fem 10 Pack
  • Prices at leat 10% Cheaper than RRP
  • Choose Free Seeds at Checkout
  • Discrete Options at Checkout
  • Collect in person if needed
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Critical Mass Collective - Purple Skunk Mass - Fem 5 Pack
  • Monster Mass Lavender Afghani
  • 8-9 Weeks Flowering Time
  • Medium High Strength Cannabis Strain
  • Official Dealer for this Breeder!
More info

Cannabis seeds are sold strictly as collectible adult souvenirs or to preserve cannabis genetics for future use if the law changes. 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.
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.
credit cards accepted securely for headshop cannabis seeds purchases
We accept credit card payments up to £200 and process payments though our 128 bit standard encrypted secure server. Credit cards are only held on our system for a limited time to protect your details. For payments above £200 or as an alternative way to pay we accept bank deposits, cash, UK postal orders or you can use Western Union.
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We can send your seeds in a DVD or inside a ball point pen if you require. Just let us know your requirements during checkout with our simple to add stealth delivery options available free of charge.

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

Sentencing Guidelines for Cultivation, Importation and Possession with intent to supply based on UK marijuana Laws

Over £400 worth of prizes to give away in our Cannabis Seeds Competition (Best picture upload wins) is a trading company of ThingsYouWant registered office Main Street, Hanworth, TW13 6SX, UK.
 All prices are inclusive of VAT on the registration number 981544496.

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