

Critical Mass Regular 15 seeds
Critical Mass Regular – Afghani × Skunk #1 by Mr. Nice
What is Critical Mass? Critical Mass by Mr. Nice is a regular, photoperiod and Indica-dominant hybrid of Afghani × Skunk #1, developed as a reworked version of Big Bud. According to the manufacturer, flowering takes just 45 to 55 days, and the indoor yield is 650 to 750 g/m²; the strain description does not state a THC value. Enormous, dense and resinous flowers, an earthy, slightly sweet Skunk aroma and a strongly physical, relaxing effect are typical. The seeds grow into male and female plants; because of the massive flowers, good ventilation is a must – in the regular seeds category. Available in a pack of 15 seeds.
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Manufacturer Information
Genetics & Origin of Critical Mass
Critical Mass comes from the Mr. Nice Seedbank of Nevil and Shantibaba and is presented in the strain description as a legend from the earliest days of cannabis breeding. It is a reworked version of Big Bud with a clear goal: as much flower mass as possible and a heavy, relaxing Indica high. The manufacturer gives the genetics as Afghani × Skunk #1 and the type as an Indica-dominant hybrid; it does not state exact proportions or a THC value. The Afghan and the Skunk heritage show in enormous flowers with dense, resinous nuggets. The strain is photoperiod and is offered as regular seed, so male and female plants are produced – interesting for selection and your own crosses. You will find a Big Bud in our range as Big Bud Regular by Sensi Seeds, and with G13 Haze Regular the shop stocks another regular line from Mr. Nice.
Who Is Critical Mass For?
Critical Mass is bred for maximum flower mass. It suits:
- Yield-focused growers who want to make the most of every square metre
- Selectors looking for a high-yielding mother plant from regular seeds
- Hobby breeders who would like to cross with a classic Afghani-Skunk line
- Growers who appreciate a short flowering time of 45 to 55 days
- Consumers who prefer a heavy, body-focused Indica effect in the evening
It is less suitable for rooms or locations with permanently high humidity, because according to the manufacturer the massive flowers can go mouldy there. You can find more regular lines under Classics and Landraces.
Growing Critical Mass: Indoor & Outdoor
Indoor Growing
Indoors, Critical Mass flowers for just 45 to 55 days. The manufacturer states 650 to 750 g/m² and considerably more with optimal care. The flip side of the massive flower formation: the strain is sensitive to excessive humidity and can go mouldy in a very damp environment – the strain description calls good ventilation a must. So ensure powerful air extraction, air movement between the plants and low humidity in the final weeks, and support heavy shoots in good time. As these are regular seeds, it is best to germinate more seeds than the number of plants you want to keep and remove male plants in pre-flowering unless pollination is wanted. The manufacturer does not state an indoor height; it describes the structure as compact. You will find the basics in the Growpedia.
Outdoor Growing
Outdoors, Critical Mass grows bushy and vigorous; according to the manufacturer, a height of 2 to 3 m is possible. In the northern hemisphere, harvest is at the end of September, in the southern hemisphere from March to early April. As the yield, the strain description states 500 to 600 g per plant. Choose an airy, sunny spot where the flowers dry off quickly after rain, because moisture is the strain's weak point. Only grow where it is legal to do so.
Effect, Aroma & Flavour of Critical Mass
The manufacturer describes the scent and flavour of Critical Mass as earthy and slightly sweetish with classic Skunk notes – an old-school character. It does not state a lab terpene profile. According to the strain description, the effect is strongly physical, relaxing and calming; the manufacturer speaks of a “sofa magnet” and recommends the strain for relaxing in the evening. The resinous flowers are also said to impress with their potency, but the strain description does not give a THC or CBD value – so we deliberately do not add a figure. With regular seeds you should also expect differences between individual plants. How intense the effect is in an individual case depends on phenotype, dose and individual tolerance.
Note: Effect information is based on manufacturer data and user experience and does not constitute medical advice.
Why Buy Critical Mass Regular at United Seedbanks?
At United Seedbanks you buy Critical Mass Regular as original genetics from Mr. Nice. As a specialist shop for cannabis seeds, we place great importance on provenance, storage and transparent information about every strain.
- Original seeds from Mr. Nice – Critical Mass as a regular pack of 15 straight from the Mr. Nice Seedbank.
- A real specialist shop – reachable in person if you have questions about a strain or your order.
- Discreet shipping – neutral, protected packaging; free shipping from an order value of €100.
- Secure payment methods – credit card, bank transfer or Bitcoin.
- Careful storage – seeds kept cool and dry for optimal germination conditions.
Anyone ordering Critical Mass Regular from United Seedbanks buys verified original seeds. Learn more about this breeder's range on the Mr. Nice page.
Frequently Asked Questions about Critical Mass Regular
Is Critical Mass by Mr. Nice feminised?
No. These are regular seeds, which grow into male and female plants. The sex is determined in pre-flowering.
What genetics are in Critical Mass?
Afghani × Skunk #1. The strain description describes it as a reworked version of Big Bud and as an Indica-dominant hybrid.
How much yield does Critical Mass deliver?
Indoors, the manufacturer states 650 to 750 g/m², and even more with optimal care. Outdoors, it is 500 to 600 g per plant.
Is Critical Mass prone to mould?
In a very damp environment, yes. Because of the massive flowers, it is sensitive to high humidity according to the manufacturer, so good ventilation is a must.
How long does Critical Mass flower?
45 to 55 days after the switch to 12/12. Outdoors, harvest in the northern hemisphere falls at the end of September.