The Best Strains to Grow in 2021

A cannabis plants growing
October 26, 2020

Determining the best marijuana strains is a subjective matter. For one thing, there are different reasons for its consumption. This challenge extends to the grow room, too, when choosing which cultivar to grow. A big part of that is your personal preference and attitude. Hence, instead of coming up with a generic list, we decided to break it down into the four characteristics that cover everyone.

What Do You Want to Grow?

Choosing a strain is only the beginning. Mostly, it comes down to the desired effects. Each, too, will have its growth characteristics. And believe it or not, picking one that is compatible with your preference, habit, and attitude can make the experience so much more fun.

Based on our experience and the feedback from Homegrown Cannabis Co.’s customers it all comes down to these 4 growth characteristics:

  • Ease of growing
  • Quick turnaround time
  • Super potent
  • Insanely high yield

Although one particular strain can exhibit good growth patterns in 2 or 3 categories, none can be the best in all four.

The Easiest Strain for Beginners to Grow

Some strains are naturally hardy. They can tolerate disruptions in environmental conditions or little mistakes – to a degree, of course. In other words, they are the best strains for newbies. Do not underestimate these strains, though, for they all bring a lot on the table. These are some of the easiest strains to grow.


  • Genotype: Indica hybrid
  • THC: 18% to 25%
  • Flowering Time: 7 to 9 weeks; Late October
  • Yields: Medium
  • Effects: Creative and euphoric
  • Medical: Anxiety and depression

Among the strains most recommended for beginners, one name stands out – White Widow Feminized. It provides a sharp, euphoric cerebral buzz and a profoundly relaxing body high, powered by over 20% THC. More importantly, for growers, its growth pattern is top-notch – naturally hardy, and resistant to pests and diseases. And as far as yields go, this strain can produce way over 20 ounces per square meter.


  • Genotype: Sativa hybrid
  • THC: 17% to 24%
  • Flowering Time: 7 to 9 weeks; October
  • Yields: Heavy
  • Effects: Happy and relaxing
  • Medical: Stress and depression

In almost any list of “the best marijuana strain for…”, Blue Dream Feminized is one of the names you would often see. Its effects are uplifting and, as the name implies, dreamy. And in the grow room, it has excellent tolerance to environmental changes, pests, and diseases. Do not underestimate its production capability – up to 20 ounces per square meter.


  • Genotype: Sativa hybrid
  • THC: 13% to 21%
  • Flowering Time: 7 to 9 weeks; Late September to early October
  • Yields: Medium
  • Effects: Energizing and euphoric
  • Medical: Anxiety and fatigue

Legend has it that it was Snoop Dogg who named this strain as such after sampling its intense cerebral stimulation. Green Crack Feminized is the perfect strain for beginners wanting to grow and harvest potent marijuana buds. If the conditions are optimal, it is also a voracious yielder, possibly providing you with up to 22 ounces per square meter. Even more impressive, it has a quick flowering time of 7 to 9 weeks.

The Fastest Strains to Grow for Impatient Growers

Fast is an understatement when it comes to autoflowering strains. You want speed? These cultivars will get you to the finish line in no time at all. At the same time that it takes photoperiods to complete the flowering stage, these cultivars have grown from seeds and are ready for harvest. And that does not even include seed germination, seedling, and vegetative periods. Without a doubt, they are the fastest-growing strains in the world.


  • Genotype: Indica hybrid
  • THC: 6% to 12%
  • Growth Cycle: 6 to 7 weeks from seed to harvest
  • Yields: Light
  • Effects: Euphoric and relaxing
  • Medical: Anxiety and pain

Fruit Autoflower, named as such, boasts of a fruity fragrance of berries. It is what you might consider as a gentle strain for beginners in marijuana use. At 6-12% THC, it is not going to be overwhelming. More importantly, it is arguably the fastest-growing strain available to you. In as little as 6 weeks, you could already harvest the buds, though the yield is light.


  • Genotype: Sativa hybrid
  • THC: 13% to 20%
  • Growth Cycle: 10 weeks from seed to harvest
  • Yields: Light
  • Effects: Happy and relaxing
  • Medical: Anxiety and stress

AK-47 Autoflower can produce a manageable, pronounced mental stimulation and relaxing physical high. If you want to get your hands on the buds quickly, then grow it from auto-flowering seeds. Even though its life cycle is only 10 weeks, you can expect 12 to 18 ounces of buds per square meter in hydro.


  • Genotype: Hybrid
  • THC: 12% to 15%
  • Growth Cycle: 10 to 11 weeks from seed to harvest
  • Yields: Light to medium
  • Effects: Energetic and creative
  • Medical: Fatigue and stress

Skunk genetics are present in half of all the hybrids in the world, according to some estimates. Therefore, it is not surprising to see Skunk Autoflower as one of the best auto-flowering cultivars you could get your hands on. After 10 to 11 weeks since seed germination, you can already harvest at least 14 ounces per square meter of buds. Its effects are a little tame compared to its photoperiod kin, which should sit well with people who seek a gentle high instead of an intense trip.

The Most Potent Cannabis Seeds

Of course, THC matters. But that is not the only compound that accounts for potency. Understand that when it comes to intensity, it is also due to the complex synergistic actions of other compounds. In particular, terpenes, which are responsible for smell and taste, enhance the effects of THC. These strains may not have the highest THC concentrations in the world, but they are some of the most potent cannabis seeds for sale.


  • Genotype: Hybrid
  • THC: 24%
  • Flowering Time: 10 to 12 weeks; Early to mid-October
  • Yields: Medium
  • Effects: Psychedelic and euphoric
  • Medical: Spasms and nausea

Quick onset, intense, and long-lasting are what you can expect from one of the world’s most popular strains – Girl Scout Cookies Feminized. From a euphoric high, this strain can also be couch-locking. This beauty is quite hardy and can produce up to 18 ounces per square meter. Keep the nighttime temperature 4 to 10 degrees lower than the daytime temperature, and you would also see striking purple hues adorning the buds.


  • Genotype: Sativa hybrid
  • THC: 28%
  • Flowering Time: 8 to 10 weeks; October
  • Yields: Heavy
  • Effects: Energetic and creative
  • Medical: Anxiety and fatigue

Bruce Banner 2.0 Feminized, one of the most illustrious strains of all time, is also dubbed “the strongest strain on planet earth.” On sheer, raw potency, it packs a THC concentration of 28%, with some people reporting it to be as high as 30%. A few puffs, and it can send you to a trippy ride. It could also alter the senses – visual and auditory distortions. Moreover, it is a generous provider, yielding up to 19 ounces per square meter.


  • Genotype: Sativa hybrid
  • THC: 24%
  • Flowering Time: 8 to 9 weeks; Late September to early October
  • Yields: Heavy
  • Effects: Expansive and creative
  • Medical: Depression and stress

Named after the famed cannabis activist and author of “The Emperor Wears No Clothes,” this cultivar boasts of an earthy, piney, fruity fragrance. Jack Herer Feminized delivers an energetic cerebral high, complemented by a gentle, relaxing body buzz. Consume a little bit too much, and its effects can get quite intense. In the grow room, expect a yield of 14 to 18 ounces per square meter.

High Yielding Strains

These are the cultivars that give you the best of many worlds. On effects, they are a class on their own. But in the grow room, they are sure to pop your eyes on the days leading to harvest. Be mindful during the peak flowering stage, for they might need supports to prevent stems from snapping at the weight of the buds.


  • Genotype: Indica hybrid
  • THC: 18%
  • Flowering Time: 10 to 12 weeks; Mid October
  • Yields: Heavy
  • Effects: Uplifting and euphoric
  • Medical: Fatigue and stress

Critical Mass Feminized is a highly sought-after strain known to produce humongous buds. Apart from providing an uplifting and relaxing high, it is also an excellent stress reliever. Its flowering time does need a few more weeks than many other strains. But wait until you see the size of the buds – up to 26 ounces per square meter when harvested.


  • Genotype: Sativa hybrid
  • THC: 20%
  • Flowering Time: 8 to 9 weeks; Mid September
  • Yields: Heavy
  • Effects: Expansive and sleepy
  • Medical: Cramps and depression

Arguably, Super Silver Haze Feminized is the most accomplished of all the descendants of the original Haze. More importantly, you can harvest up to 28 ounces per square meter as long as conditions are optimal. Among Sativa hybrids, it has among the quickest flowering time. Grow and nurture this strain with the utmost care. Once it is time, you will have the buds of a 3-time Cannabis Cup winner (1997, 1998, 1999).


  • Genotype: Indica hybrid
  • THC: 15% to 26%
  • Flowering Time: 7 to 9 weeks; Mid to late October
  • Yields: Heavy
  • Effects: Happy and euphoric
  • Medical: Pain and stress

The iconic Big Bud Feminized in its original form was the winner of the 1989 High Times Cannabis Cup Best Indica category. Breeders all over the world have used it to create or enhance hybrids for mostly one purpose – increase the size of buds. As the name implies, this strain does produce massive buds. Expect to harvest over 20 ounces per square meter in as little as seven weeks of flowering.

If You Were to Pick One Strain…