The genetics of the cannabis seeds you plant are responsible for dictating both the speed and quality of the marijuana plant it will grow into. It even plays a role in the potency and flavor profile when the marijuana is being consumed, by affecting the quality and quantity of cannabanoids and terpenes.

Each strain of marijuana is best explored personally, to experience the different taste profiles and effects. However even within the same marijuana strain, there are large amounts of discrepancies with their genetics - and this is where the reputable seed breeding companies come into play: There are countless factors leading to the production of seeds with strong genetics and with the addition of so many new strains it has become more common to find unstable genetics. However, each year the genetics of existing strains continue to grow stronger - with the breeders doubling down and breeding out undesirable traits.

We have collected a list of contenders for the top genetics to be growing during 2020.
You can learn more about each strain by clicking into it, or browsing more information about the breeder including their complete product line.

More Seeds by Flying Dutchmen
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Flying Dutchmen Amsterdam Mist is a feminized sativa hybrid develop by Dutch seed breeders from Haze Original. Sativas from South India and South East Asia are combined with the legendary Afghani indica in this stunning cannabis cros..


Learn more about Amsterdam Mist
More Seeds by Karma Genetics
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Canuk Seeds OG (Original Gangster) or (Ocean Grown) Kush is a sativa dominant strain. OG Kush makes up the genetic backbone of many West Coast Cannabis strains, but in spite of the strains ubiquity, its original genetics still rema..


Learn more about OG Kush
More Seeds by Seed Junky Genetics
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GROD OG is a mostly sativa variety from Seed Junky and can be cultivated indoors (where the plants will need a flowering time of ±67 days) and outdoors. Seed Junkys GROD OG is/was never available as feminized seeds.To make the..


Learn more about GROD OG
More Seeds by Dutchfem
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The Dutchfem Critical XL Autoflowering is a high yield cannabis seed, offering an improved and easy to grow variant of hugely popular Critical XL version. The Critical strain is known for its short flowering time and high yield, rega..


Learn more about Critical XL Automatic
More Seeds by Mr.Nice
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Pretty critical indeed! This combination has already brought special grows for many. Fruity Haze with a plethora of aromas available, it is like a smorgasbord of fruits and berries and piney lemons spice... There is a yielder in this..


Learn more about Pink Floyd
More Seeds by Bomb Seeds
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Cherry Bomb is the hard hitting, big yielding strain from Bomb Seeds. The result of crossing our monster yielding Big Bomb with a unique and fruity mother means growers can expect an explosion of flavour and maximum yields.As the nam..


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More Seeds by Green Point Seeds
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The Deputy – The Bruce Banner #3 strain exploded in the cannabis scene, much like a fit of the Hulk. This green Herculean cultivar has a widespread reputation for her extreme THC potency, sweet strawberry/diesel flavour, and he..


Learn more about The Deputy
More Seeds by Anesia Seeds
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The genetic of our Hawaiiana is based on Hawaiian Sativa and Mango Haze. Hawaiiana is a Sativa dominant strain with a very high THC conten of 25%. She elevates moods and the high is accompanied by energy and creativity. The high offe..


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More Seeds by Zamnesia
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C. Banana was previously known as Banana OG and later rebranded as Chiquita Banana. Chiquita Brands International, however, prefers to keep the exclusive rights to their name and therefore, C. Banana was born. Despite the name change..


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More Seeds by Dynasty Seeds
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Honey Badger Haze is an easy to grow sativa with a spectacular terpene profile that will make you salivate upon the first whiff.. Haze expressions are more predominant with pheno #1 & #2.. 9-10 weeks is typical for most phenos, b..


Learn more about Honey Badger Haze
More Seeds by Exotic Seed
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This is one of the most interesting and different varieties we have made in recent years, the result of crossing genetics that produce very dark reddish and purple, almost black hues; resulting in a progeny where all individuals disp..


Learn more about Exotic Colours
More Seeds by Bomb Seeds
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Berry Bomb Auto is the incredibly fruity autoflowering version of one our most popular strains, Berry Bomb.The key characteristics we aimed to maintain when developing the strain were the explosive growth and unrivalled sweet, berry ..


Learn more about Berry Bomb Auto
More Seeds by Positronic
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Positronic Critical Express HIBRIDISATION Our most award winning strain in cups is CRITICAL#47. After a long way of hard work and many testings, we crossed the mother used in it with our Low ryder II to get a stable automatic strain...


Learn more about Critical Express
More Seeds by Mandala
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White Bhutanese is unique sativa dominant strain that comes from Bhutanese landrace genetics. This feminized hybrid is only one generation removed from its wild mother. The plant has excellent mold resistance and grows well even in v..


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More Seeds by Dark Heart Nursery
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STORY: Sour Diesel has a storied past and there is some argument over how it was proliferated and who brought it from where. Sour Diesel is related to other phenos we’ve come to love; Chemdog and OG Kush. Some rumors say it all sta..


Learn more about Sour Diesel
More Seeds by Mr.Nice
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A reworked excellent version of an old breed once known as Big Bud. This is an absolute must for the cultivator who demands a high yield with an equally high stone. It is the heaviest plant currently in production for commercial farm..


Learn more about Critical Mass
More Seeds by Short Stuff
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Sharkbite is a excellent new ‘white’ strain we have created by crossing great white shark with our autoflowering line. Sharkbite keeps the powerful stone and tangy odour of its great white shark parent and puts on tons of white c..


Learn more about SharkBite
More Seeds by Dark Heart Nursery
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Chemdog 4 has a tight bud structure with a large cola build. It produces plump buds heavy in trichome crystals and dense light green buds without many hairs or leaves.GEOGRAPHIC ORIGIN: Legend has it that it’s the East Coast, USAS..


Learn more about Chemdawg 4
More Seeds by Dr. Underground
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The power and effect of this strains is known worldwide,we started the work thanks to Reeferman Seeds old stock kept for more than five years. After growing the genetic line we decided to play it in different crops open pollination..


Learn more about U - Pink Kush
More Seeds by Heavyweight Seeds
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“In this country, you gotta make the money first. Then when you get the money, you get the power. Then when you get the power, then you get the women.”Money Bush is the ideal plant for the budding Tony Montana! Heavyweight have p..


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More Seeds by ACE Seeds
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The Nepalese sativa is a strong and compact highland sativa with fast flowering and excellent resistance against mold and cold weather. Its dense and resinous flowers, with a very good calyx-flower ratio, produce first class hash. Th..


Learn more about NEPAL JAM
More Seeds by Mandala
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Mandala #1 is an indica/sativa hybrid with great stability, easy growing and a high percentage of landrace genetics. This is a robust plant with top-quality buds and good cold and pest resistance.Mandala #1 is a great choice for nort..


Learn more about Mandala #1